I change my brake fluid every two years as I stated before. Brake fluid is NOT hydraulic oil.
Sent from my iPhone > On Nov 20, 2022, at 5:14 PM, Anony Mous via KRnet <krnet@list.krnet.org> > wrote: > > Please send me all your unwanted brake fluid. Do you change the fluid every > 3 years? I don’t think so. > > Ned Derickson > 520 331-0112 > >> On Nov 20, 2022, at 5:00 AM, krnet-requ...@list.krnet.org wrote: >> >> Send KRnet mailing list submissions to >> krnet@list.krnet.org >> >> To subscribe or unsubscribe via the World Wide Web, visit >> https://list.krnet.org/mailman/listinfo/krnet >> or, via email, send a message with subject or body 'help' to >> krnet-requ...@list.krnet.org >> >> You can reach the person managing the list at >> krnet-ow...@list.krnet.org >> >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of KRnet digest..." >> >> >> Today's Topics: >> >> 1. Brake Fluid (mark jones) >> 2. Re: Brake Fluid (Mark Langford) >> 3. Re: Brake Fluid (Craig Williams) >> 4. Re: Brake Fluid (Dr. Feng Hsu) >> 5. Re: Brake Fluid (k...@bouyea.net) >> 6. Re: Brake Fluid (Dr. Feng Hsu) >> 7. Re: Brake Fluid (Mark Langford) >> 8. Re: Brake Fluid (Flesner) >> 9. Re: Brake Fluid (Dr. Feng Hsu) >> 10. Re: Brake Fluid (Flesner) >> 11. Re: Brake Fluid (Rich Parker) >> 12. Re: Brake Fluid (k...@bouyea.net) >> 13. Re: Brake Fluid (Mark Langford) >> 14. Re: Brake Fluid (Rich Parker) >> 15. Re: Brake Fluid (Flesner) >> 16. Re: Brake Fluid (Steven Willman) >> 17. Re: Brake Fluid (Flesner) >> 18. Re: Brake Fluid (John Price) >> 19. Re: Brake Fluid (Dr. Feng Hsu) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Sat, 19 Nov 2022 10:22:15 -0500 >> From: mark jones <flyk...@gmail.com> >> To: KRnet <krnet@list.krnet.org> >> Subject: KRnet> Brake Fluid >> Message-ID: >> <CAPV=ta9oubr8trzgk6sx6hxd-8d0hqo_ruakg9izovrphz6...@mail.gmail.com> >> Content-Type: text/plain; charset="utf-8" >> >> Does aviation brake fluid have a long shelf life? I have some that must be >> at least ten years old. Is it safe to use? >> >> Mark Jones (N771MJ) >> Oldsmar, FL >> >> flyk...@gmail.com >> www.flykr2s.com >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/6d0f8386/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 2 >> Date: Sat, 19 Nov 2022 09:38:26 -0600 >> From: Mark Langford <m...@n56ml.com> >> To: mark jones via KRnet <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <2329b191-7741-4316-33a3-c9b6aab70...@n56ml.com> >> Content-Type: text/plain; charset=UTF-8; format=flowed >> >> Mark Jones wrote: >> >> Does aviation brake fluid have a long shelf life? I have some that must >> be at least ten years old. Is it safe to use? >> >> Just use it.? I've been using the same one gallon can for 20 years, and >> it's fine.? I'm sure somewhere you can find some short shelf life >> cited....probably from somebody that sells it,? but I don't see people >> in a rush to change their brake fluid at annuals.? If it ain't broke, >> don't "fix" it.? I did some research on it (admittedly a year ago, which >> is forever in my brain), and I was not concerned. >> >> Also, I've learned the "exercising" brake cylinders past their normal >> limits is risky business, because o-rings go places they are not used to >> going and do funny things, so it's best to leave that stuff alone, in my >> humble opinion, FWIW.? Of course it you fill the brake system from the >> wheel up, this is not usually an issue.? It's the bleeding through >> pumping stuff that can get you in trouble. >> >> Mark Langford >> m...@n56ml.com >> http://www.n56ml.com >> Huntsville, AL >> >> >> >> >> ------------------------------ >> >> Message: 3 >> Date: Sat, 19 Nov 2022 10:53:18 -0500 (EST) >> From: Craig Williams <cr...@kr2seafury.com> >> To: KRnet <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <2081838223.2488364.1668873198...@email.ionos.com> >> Content-Type: text/plain; charset=UTF-8 >> >> Here is more than you ever wanted to know. BTW, I use Texaco #15 (5606H >> equivalent) that is at least 30 yrs old in the KR and my Cessna. >> >> See #4 below. If it meets that STD then its fine according to the military. >> >> Current spec is MIL-PRF5606H >> >> 3.5.4 Storage stability >> The fully blended product shall show no separation of ingredients or >> evidence of crystallization. The fully blended product shall be clear and >> transparent when examined visually, and shall conform to the requirements of >> section 3 after 12 months of storage as specified in 4.4.3 >> >> 4.4.3 Table 5. Storage stability test >> >> Use FED-STD-791 Test Method 3465 >> >> 1.Store the sample for one year in the storage chamber 24? " 3?C (75? " 5?F) >> 2. At the end of the 12-month period, remove the jar from the chamber, being >> careful not to shake or agitate the contents. >> 3.Visually examine the sample, and note the presence of cloudiness, >> sediment, suspended matter, discoloration, or other changes in homogeneity. >> 4. Report the presence of cloudiness, sediment, suspended matter, >> discoloration, or other changes in homogeneity. >> >> 6.1.1 Storage conditions >> Prior to use in the intended equipment, the product may be stored under >> conditions of covered or uncovered storage in geographic areas that range in >> temperatures from -57?C to +49?C. >> >> Craig >> N886MJ >> >>>> On 11/19/2022 9:22 AM CST mark jones via KRnet <krnet@list.krnet.org> >>>> wrote: >>> >>> >>> Does aviation brake fluid have a long shelf life? I have some that must be >>> at least ten years old. Is it safe to use? >> >> >> ------------------------------ >> >> Message: 4 >> Date: Sat, 19 Nov 2022 10:45:19 -0600 >> From: "Dr. Feng Hsu" <fenghs...@gmail.com> >> To: KRnet <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: >> <caatz12qtrwmgqyhxpgliv0oa-zcnasog9qmwfzsqxj_shjz...@mail.gmail.com> >> Content-Type: text/plain; charset="utf-8" >> >> Mark, >> >> I bought a whole gallon of the aviation grade hydraulic fluid for about $45 >> not long ago, so if I were you I'd choose to buy a brand new gallon or >> bottle of ave fluid instead, simply because it's not worthy of taking any >> risks for a small saving just around 45 bucks.... >> >> Happy holidays to all! >> >> Dr. Hsu >> >>> On Sat, Nov 19, 2022, 9:22 AM mark jones via KRnet <krnet@list.krnet.org> >>> wrote: >>> >>> Does aviation brake fluid have a long shelf life? I have some that must be >>> at least ten years old. Is it safe to use? >>> >>> Mark Jones (N771MJ) >>> Oldsmar, FL >>> >>> flyk...@gmail.com >>> www.flykr2s.com >>> -- >>> KRnet mailing list >>> KRnet@list.krnet.org >>> https://list.krnet.org/mailman/listinfo/krnet >>> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/0ba5acf7/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 5 >> Date: Sat, 19 Nov 2022 09:53:15 -0800 >> From: <k...@bouyea.net> >> To: "'KRnet'" <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <004801d8fc3f$cd214b00$6763e100$@bouyea.net> >> Content-Type: text/plain; charset="utf-8" >> >> Mark, >> >> Though I?ve used old fluid before, Dr. Hsu is right on this one. At least >> according to AC Spruce; >> https://www.aircraftspruce.com/catalog/lgpages/hydfluid5606qt_09-27000.php >> >>>> Q: What is the shelf life for P/N: 09-27000 HYDRAULIC FLUID MIL-H-5606A? >> >>>> This product has a 3 year shelf life. >> >> John Bouyea / OR81/ Hillsboro, OR >> N133RM KR-2S ? imported, fixed & flying >> www.bouyea.net/N133RM >> >> >> >> On Behalf Of Dr. Feng Hsu via KRnet >> Subject: Re: KRnet> Brake Fluid >> >> ?I'd choose to buy a brand new gallon or bottle of ave fluid instead >> >> Dr. Hsu >> >> >> >> mark jones via KRnet <krnet@list.krnet.org> wrote: >> Does aviation brake fluid have a long shelf life? I have some that must be >> at least ten years old. Is it safe to use? >> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/632caa44/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 6 >> Date: Sat, 19 Nov 2022 12:07:44 -0600 >> From: "Dr. Feng Hsu" <fenghs...@gmail.com> >> To: KRnet <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: >> <caatz12rofys27k07jtndjcsftszrehe8orty2p2dvbtofpw...@mail.gmail.com> >> Content-Type: text/plain; charset="utf-8" >> >> Thanks John for agreeing with my suggestion to Mark! Nevertheless, are you >> saying that most of what I said here were wrong or ignorant...?! No hard >> feelings at all John, am just trying to stirring up a little here in this >> group. After all, it's been quiet, despite of the rapid approaching of >> wonderful holidays ahead of us!!! >> >> Cheers & Happy holidays! >> >> Dr. Hsu >> >>>> On Sat, Nov 19, 2022, 11:54 AM <k...@bouyea.net> wrote: >>> >>> Mark, >>> >>> Though I?ve used old fluid before, Dr. Hsu is right on this one. At least >>> according to AC Spruce; >>> https://www.aircraftspruce.com/catalog/lgpages/hydfluid5606qt_09-27000.php >>> >>>>> Q: What is the shelf life for P/N: 09-27000 HYDRAULIC FLUID MIL-H-5606A? >>> >>>>> This product has a 3 year shelf life. >>> >>> John Bouyea / OR81/ Hillsboro, OR >>> N133RM KR-2S ? imported, fixed & flying >>> www.bouyea.net/N133RM >>> >>> >>> >>> *On Behalf Of *Dr. Feng Hsu via KRnet >>> *Subject:* Re: KRnet> Brake Fluid >>> >>> ?I'd choose to buy a brand new gallon or bottle of ave fluid instead >>> >>> Dr. Hsu >>> >>> >>> >>> mark jones via KRnet <krnet@list.krnet.org> wrote: >>> Does aviation brake fluid have a long shelf life? I have some that must be >>> at least ten years old. Is it safe to use? >>> -- >>> KRnet mailing list >>> KRnet@list.krnet.org >>> https://list.krnet.org/mailman/listinfo/krnet >>> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/c15efef7/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 7 >> Date: Sat, 19 Nov 2022 12:10:12 -0600 >> From: Mark Langford <m...@n56ml.com> >> To: krnet@list.krnet.org >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <7530ad30-ee38-733b-9b8c-17d26105d...@n56ml.com> >> Content-Type: text/plain; charset="utf-8"; Format="flowed" >> >> John Bouyea wrote: >> >>>> This product has a 3 year shelf life. >> >> Yep, AS&S sells it, and the manufacturer makes it and sells it. I just >> didn't want to wait several days, pay a bunch of money for a whole >> 'nuther gallon, pay for shipping that thing, and still have the "old" >> 9/10ths of a gallon of hydraulic oil to carry to Hazardous Waste >> Disposal. The "old" hydraulic oil looked brand new to me, and I'm having >> a hard time envisioning how something as simple as a brake cylinder and >> caliper are so dependent on the exact qualities of the fluid they are >> using (especially OIL), short of "material compatibility". Y'all do what >> you want, and I'll do what I want.? I think I'll survive this tragically >> foolish decision. >> >> YES, it's best to buy a NEW gallon of oil, I'll confess, especially >> since it's your money and your time. >> >> I was in England for 9 months several years ago, and listened to a lot >> of BBC news shows.? One of them was about shelf life of various >> foods....how to figure out if it's bad, when it's dangerous to eat, >> etc.? The bottom line was "use your eyes and nose to determine if it's >> good or not".? I think we buy and throw away more vegetables and other >> foods than we eat in this country....something like 70% (from memory, >> probably not correct), and a large percentage of it is still fine to eat. >> >> Mark Langford >> m...@n56ml.com >> http://www.n56ml.com >> Huntsville, AL >> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/df4a0f59/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 8 >> Date: Sat, 19 Nov 2022 12:19:19 -0600 >> From: Flesner <fles...@frontier.com> >> To: krnet@list.krnet.org >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <e9cdff94-30b3-4577-9928-e45b19b09...@frontier.com> >> Content-Type: text/plain; charset="utf-8"; Format="flowed" >> >>>> On 11/19/2022 9:22 AM, mark jones via KRnet wrote: >>> Does aviation brake fluid have a long shelf life? I have some that >>> must be at least ten years old. Is it safe to use? >>> >>> Mark Jones (N771MJ) >> >> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> >> Go with what makes you comfortable but I've not serviced the fluid in my >> brake system since installing it 20 years ago and they just keep >> working.? I keep the puck from coming out on? pad replacement so as not >> to loose any fluid.? I check brake function before every start up by >> holding the brakes and rocking my 200+ pounds in the seat.? I can tell >> if the brakes are holding.? They are checked again on run up for mag >> check and I suspect there is little chance of them failing in flight and >> unavailable for landing.? Nose draggers? might want to take a bit more >> precaution as you use brakes for steering.? Other than leaks or >> corrosion issues I can't imagine a failure mode for the (correct type) >> fluid. >> >> Larry Flesner >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/ad4493eb/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 9 >> Date: Sat, 19 Nov 2022 12:19:03 -0600 >> From: "Dr. Feng Hsu" <fenghs...@gmail.com> >> To: KRnet <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: >> <CAATZ12RAitJxPwWcDR_cp-SHaU5=GseZLV9=ufh2y3ahbeo...@mail.gmail.com> >> Content-Type: text/plain; charset="utf-8" >> >> By the way John, I forgot to add that, in my eyes you are such one of a >> kind aviator who can use or reuse just about anything on your beautiful >> KR2, or altering anything you can lay your hands on, let alone to use some >> used hydraulic fluid ...! Am I correct?! >> >> My other question here is for Luis, and I thought he might have been flying >> his newly finished & certified KR2S quietly since September, as I haven't >> seen him showing up here in Houston yet with his bird so far...?! >> >> Cheers! >> >> Dr. Hsu >> >>>> On Sat, Nov 19, 2022, 11:54 AM <k...@bouyea.net> wrote: >>> >>> Mark, >>> >>> Though I?ve used old fluid before, Dr. Hsu is right on this one. At least >>> according to AC Spruce; >>> https://www.aircraftspruce.com/catalog/lgpages/hydfluid5606qt_09-27000.php >>> >>>>> Q: What is the shelf life for P/N: 09-27000 HYDRAULIC FLUID MIL-H-5606A? >>> >>>>> This product has a 3 year shelf life. >>> >>> John Bouyea / OR81/ Hillsboro, OR >>> N133RM KR-2S ? imported, fixed & flying >>> www.bouyea.net/N133RM >>> >>> >>> >>> *On Behalf Of *Dr. Feng Hsu via KRnet >>> *Subject:* Re: KRnet> Brake Fluid >>> >>> ?I'd choose to buy a brand new gallon or bottle of ave fluid instead >>> >>> Dr. Hsu >>> >>> >>> >>> mark jones via KRnet <krnet@list.krnet.org> wrote: >>> Does aviation brake fluid have a long shelf life? I have some that must be >>> at least ten years old. Is it safe to use? >>> -- >>> KRnet mailing list >>> KRnet@list.krnet.org >>> https://list.krnet.org/mailman/listinfo/krnet >>> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/c4b99a7b/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 10 >> Date: Sat, 19 Nov 2022 12:47:49 -0600 >> From: Flesner <fles...@frontier.com> >> To: krnet@list.krnet.org >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <aefbc513-8cdc-f2c6-3d73-43a997ae2...@frontier.com> >> Content-Type: text/plain; charset="utf-8"; Format="flowed" >> >>>> On 11/19/2022 11:53 AM, k...@bouyea.net wrote: >>> >>>>> Q: What is the shelf life for P/N: 09-27000 HYDRAULIC FLUID MIL-H-5606A? >>> >>>>> This product has a 3 year shelf life. >>> >> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> >> I suspect this "disclaimer" has more to do with the legal department >> than the chemist if it is a quality fluid, stored properly, and used >> correctly.? I have some lightweight "Maytag" oil in a small can that is >> 50+ years old That I still use around the house occasionally with >> satisfactory results. >> >> Larry Flesner >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/38cc7f99/attachment-0001.htm> >> -------------- next part -------------- >> A non-text attachment was scrubbed... >> Name: g0q3Yb2YY90MtWyJ.jpg >> Type: image/jpeg >> Size: 141630 bytes >> Desc: not available >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/38cc7f99/attachment-0001.jpg> >> >> ------------------------------ >> >> Message: 11 >> Date: Sat, 19 Nov 2022 19:06:18 +0000 >> From: Rich Parker <richonther...@hotmail.com> >> To: KRnet <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: >> >> <dm4pr12mb75753c089c4a7a25bac89918bf...@dm4pr12mb7575.namprd12.prod.outlook.com> >> >> Content-Type: text/plain; charset="us-ascii" >> >> Brake fluid is hygroscopic. However if it's been in a sealed container there >> shouldn't be a problem. If you suspect it might have water in it you can >> always bring it to boiling temp to remove the water. >> >> https://www.mynrma.com.au/cars-and-driving/car-servicing/resources/understanding-brake-fluid#:~:text=Brake%20fluids%20are%20hygroscopic%2C%20what,the%20vehicle%20is%20not%20driven. >> >> Rich >> ________________________________ >> From: KRnet <krnet-boun...@list.krnet.org> on behalf of Mark Langford >> <m...@n56ml.com> >> Sent: Saturday, November 19, 2022 10:38:26 AM >> To: mark jones via KRnet <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> >> Mark Jones wrote: >> >> Does aviation brake fluid have a long shelf life? I have some that must >> be at least ten years old. Is it safe to use? >> >> Just use it. I've been using the same one gallon can for 20 years, and >> it's fine. I'm sure somewhere you can find some short shelf life >> cited....probably from somebody that sells it, but I don't see people >> in a rush to change their brake fluid at annuals. If it ain't broke, >> don't "fix" it. I did some research on it (admittedly a year ago, which >> is forever in my brain), and I was not concerned. >> >> Also, I've learned the "exercising" brake cylinders past their normal >> limits is risky business, because o-rings go places they are not used to >> going and do funny things, so it's best to leave that stuff alone, in my >> humble opinion, FWIW. Of course it you fill the brake system from the >> wheel up, this is not usually an issue. It's the bleeding through >> pumping stuff that can get you in trouble. >> >> Mark Langford >> m...@n56ml.com >> http://www.n56ml.com >> Huntsville, AL >> >> >> -- >> KRnet mailing list >> KRnet@list.krnet.org >> https://list.krnet.org/mailman/listinfo/krnet >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/3ee0687f/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 12 >> Date: Sat, 19 Nov 2022 11:14:48 -0800 >> From: <k...@bouyea.net> >> To: <fenghs...@gmail.com>, "'KRnet'" <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <007501d8fc4b$32142f40$963c8dc0$@bouyea.net> >> Content-Type: text/plain; charset="utf-8" >> >> Dr. Hsu and all, >> >> No, I did not imply I REUSED brake fluid. That?s bad practice. I have >> successfully put AGED brake fluid in my KR with good results. >> >> I bought my present gallon can for my Beechcraft; I sold that airplane in >> 1993. I rebuilt the brakes in 133RM 4 years ago with fluid from that same >> can? >> >> As Flesner says, ?Your results may vary.? >> >> >> >> Subject: Re: KRnet> Brake Fluid >> >> By the way John, ? ?to use some used hydraulic fluid ...! Am I correct?!? >> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/6f3c4efc/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 13 >> Date: Sat, 19 Nov 2022 13:16:50 -0600 >> From: Mark Langford <m...@n56ml.com> >> To: krnet@list.krnet.org >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <974dee1c-1736-94ea-d79b-7ca1fb333...@n56ml.com> >> Content-Type: text/plain; charset=UTF-8; format=flowed >> >> >> Rich Parker wrote: >> >>>> Brake fluid is hygroscopic. However if it's been in a sealed >> container there shouldn't be a problem. If you suspect it might have >> water in it you can always bring it to boiling temp to remove the water.<< >> >> Car brake fluid and aircraft hydraulic brake oil are two completely >> different things. Yes, car fluid is hygroscopic, and I do replace my >> automotive brake fluid when it discolors, as it has become corrosive, at >> least the stuff in the reservoir.? Last I heard, water and oil don't mix. >> >> Mark Langford >> m...@n56ml.com >> http://www.n56ml.com >> Huntsville, AL >> >> >> >> >> ------------------------------ >> >> Message: 14 >> Date: Sat, 19 Nov 2022 20:01:40 +0000 >> From: Rich Parker <richonther...@hotmail.com> >> To: KRnet <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: >> >> <dm4pr12mb7575842b409c37d86967d602bf...@dm4pr12mb7575.namprd12.prod.outlook.com> >> >> Content-Type: text/plain; charset="us-ascii" >> >> What percentage of homebuilders do you think use aircraft vs auto brake >> fluid...... >> >> Rich >> ________________________________ >> From: KRnet <krnet-boun...@list.krnet.org> on behalf of Mark Langford >> <m...@n56ml.com> >> Sent: Saturday, November 19, 2022 2:16:50 PM >> To: krnet@list.krnet.org <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> >> >> Rich Parker wrote: >> >>>> Brake fluid is hygroscopic. However if it's been in a sealed >> container there shouldn't be a problem. If you suspect it might have >> water in it you can always bring it to boiling temp to remove the water.<< >> >> Car brake fluid and aircraft hydraulic brake oil are two completely >> different things. Yes, car fluid is hygroscopic, and I do replace my >> automotive brake fluid when it discolors, as it has become corrosive, at >> least the stuff in the reservoir. Last I heard, water and oil don't mix. >> >> Mark Langford >> m...@n56ml.com >> http://www.n56ml.com >> Huntsville, AL >> >> >> -- >> KRnet mailing list >> KRnet@list.krnet.org >> https://list.krnet.org/mailman/listinfo/krnet >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/8eee3dda/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 15 >> Date: Sat, 19 Nov 2022 14:23:52 -0600 >> From: Flesner <fles...@frontier.com> >> To: krnet@list.krnet.org >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <39c4bfff-dd22-f79c-d7f7-2d87e4323...@frontier.com> >> Content-Type: text/plain; charset="utf-8"; Format="flowed" >> >>>> On 11/19/2022 2:01 PM, Rich Parker via KRnet wrote: >>> What percentage of homebuilders do you think use aircraft vs auto >>> brake fluid...... >>> >>> Rich >> >> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> >> With that in mind, builders should be more concerned with using the >> correct type of fluid then being concerned with aging aviation brake >> fluid.? I know of an A&P, I.A that used the incorrect type of fluid in >> his Stenson Gullwing swelling up some "O" rings and locking up his >> brakes.? Dumb mistakes come in all flavors. >> >> Larry Flesner >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/82bf4e13/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 16 >> Date: Sat, 19 Nov 2022 15:33:21 -0500 >> From: Steven Willman <swill...@yahoo.com> >> To: KRnet <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <d2143e60-2694-49c4-bd61-74b8453c6...@yahoo.com> >> Content-Type: text/plain; charset="utf-8" >> >> Automotive brake fluid is a form of liquid plastic and also has alcohol in >> it to keep any water that might find its way into the system from freezing. >> That is what we were taught in tech school. I have stored unused brake >> fluid (in the steel container purchased from the store) and it went dark. I >> have never had that problem now that it is sold in plastic containers. I >> bleed the brakes to purge the old fluid out every two years in my vehicles. >> I have worked on cars that had fluid as thick as syrup (but it was not >> dark). The lady drove through an intersection trying to stop. I value my >> life and the lives of my family so I don?t let brake fluid get old. So tell >> me that there is a difference between brake fluid used in a car and a >> plane.!!!!!!!!!!! >> >> Sent from my iPhone >> >>>> On Nov 19, 2022, at 3:01 PM, Rich Parker via KRnet <krnet@list.krnet.org> >>>> wrote: >>> >>> ? What percentage of homebuilders do you think use aircraft vs auto brake >>> fluid...... >>> >>> Rich >>> From: KRnet <krnet-boun...@list.krnet.org> on behalf of Mark Langford >>> <m...@n56ml.com> >>> Sent: Saturday, November 19, 2022 2:16:50 PM >>> To: krnet@list.krnet.org <krnet@list.krnet.org> >>> Subject: Re: KRnet> Brake Fluid >>> >>> >>> Rich Parker wrote: >>> >>>>> Brake fluid is hygroscopic. However if it's been in a sealed >>> container there shouldn't be a problem. If you suspect it might have >>> water in it you can always bring it to boiling temp to remove the water.<< >>> >>> Car brake fluid and aircraft hydraulic brake oil are two completely >>> different things. Yes, car fluid is hygroscopic, and I do replace my >>> automotive brake fluid when it discolors, as it has become corrosive, at >>> least the stuff in the reservoir. Last I heard, water and oil don't mix. >>> >>> Mark Langford >>> m...@n56ml.com >>> http://www.n56ml.com >>> Huntsville, AL >>> >>> >>> -- >>> KRnet mailing list >>> KRnet@list.krnet.org >>> https://list.krnet.org/mailman/listinfo/krnet >>> -- >>> KRnet mailing list >>> KRnet@list.krnet.org >>> https://list.krnet.org/mailman/listinfo/krnet >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/ffa2585f/attachment-0001.htm> >> >> ------------------------------ >> >> Message: 17 >> Date: Sat, 19 Nov 2022 15:21:06 -0600 >> From: Flesner <fles...@frontier.com> >> To: krnet@list.krnet.org >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <3112877a-85ab-c999-40fe-e353a2ac0...@frontier.com> >> Content-Type: text/plain; charset=UTF-8; format=flowed >> >>>> On 11/19/2022 2:33 PM, Steven Willman via KRnet wrote: >>> ?The lady drove through an intersection trying to stop. ?I value my >>> life and the lives of my family so I don?t let brake fluid get old. >>> ?So tell me that there is a difference between brake fluid used in a >>> car and a plane.!!!!!!!!!!! >> >> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> >> If all brake fluids were the same all containers would simply be labeled >> "brake fluid" and not identified? as one of the half dozen? or more >> different types sold.? Know your system and go with what the >> manufacturer specifies. >> >> I suspect there is more to the story of the lady? than mentioned here.? >> If it were simply "old brake fluid" we'd have a lot more people killed >> in accidents than we do now.? I'm guessing that not one in a thousand >> cars on the road have their brake fluids changed in their lifetime.? >> I've owned autos / trucks for 50+ years, driven them for a dozen or more >> years with some past 200,000 miles and never once had brake fluid >> changed and not once noticed reduced braking action other than worn >> pads.? My current Buick is 15 years old with 140,000 miles and my >> previous truck was 16 years old with 226,000 miles and I know for a fact >> the brake fluids were never changed.? As always, >> YRMV................................ >> >> Everyone has an opinion based on their own experiences so go with what >> makes you comfortable.? It that doesn't work, try something different. >> >> Larry Flesner >> >> >> >> ------------------------------ >> >> Message: 18 >> Date: Sat, 19 Nov 2022 19:44:12 -0500 >> From: John Price <pricej...@gmail.com> >> To: KRnet <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: <f3776c53-a83b-4aa9-b51e-b4a071f0c...@gmail.com> >> Content-Type: text/plain; charset=utf-8 >> >> I don?t post often but! ? When I was crewing or doing inspections on >> airplanes (USAF aircraft mechanic ?69-?90) any open can of MIL 5606 was >> disposed of promptly. We were concerned that the fluid might become >> contaminated with dirt, dust or some other crud. If you need hydraulic >> fluid, purchase the smallest quantity you can get. >> >> John Price >> >> >>>> On Nov 19, 2022, at 4:20 PM, Flesner via KRnet <krnet@list.krnet.org> >>>> wrote: >>> >>> ?On 11/19/2022 2:33 PM, Steven Willman via KRnet wrote: >>>> The lady drove through an intersection trying to stop. I value my life >>>> and the lives of my family so I don?t let brake fluid get old. So tell me >>>> that there is a difference between brake fluid used in a car and a >>>> plane.!!!!!!!!!!! >>> >>> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >>> >>> If all brake fluids were the same all containers would simply be labeled >>> "brake fluid" and not identified as one of the half dozen or more >>> different types sold. Know your system and go with what the manufacturer >>> specifies. >>> >>> I suspect there is more to the story of the lady than mentioned here. If >>> it were simply "old brake fluid" we'd have a lot more people killed in >>> accidents than we do now. I'm guessing that not one in a thousand cars on >>> the road have their brake fluids changed in their lifetime. I've owned >>> autos / trucks for 50+ years, driven them for a dozen or more years with >>> some past 200,000 miles and never once had brake fluid changed and not once >>> noticed reduced braking action other than worn pads. My current Buick is >>> 15 years old with 140,000 miles and my previous truck was 16 years old with >>> 226,000 miles and I know for a fact the brake fluids were never changed. >>> As always, YRMV................................ >>> >>> Everyone has an opinion based on their own experiences so go with what >>> makes you comfortable. It that doesn't work, try something different. >>> >>> Larry Flesner >>> >>> -- >>> KRnet mailing list >>> KRnet@list.krnet.org >>> https://list.krnet.org/mailman/listinfo/krnet >> >> >> ------------------------------ >> >> Message: 19 >> Date: Sat, 19 Nov 2022 20:15:54 -0600 >> From: "Dr. Feng Hsu" <fenghs...@gmail.com> >> To: KRnet <krnet@list.krnet.org> >> Subject: Re: KRnet> Brake Fluid >> Message-ID: >> <CAATZ12Quk7f3DpOKTJDtoMxPVVQ=jpt7+b5rz10oxhd22+i...@mail.gmail.com> >> Content-Type: text/plain; charset="utf-8" >> >> John, as a USAF veteran I can fully understand and appreciate your view >> point concerning the use of old hydraulic fluid in any of the flying >> aircrafts! >> >> Dr. Hsu >> >> >> On Sat, Nov 19, 2022, 6:44 PM John Price via KRnet <krnet@list.krnet.org> >> wrote: >> >>> I don?t post often but! ? When I was crewing or doing inspections on >>> airplanes (USAF aircraft mechanic ?69-?90) any open can of MIL 5606 was >>> disposed of promptly. We were concerned that the fluid might become >>> contaminated with dirt, dust or some other crud. If you need hydraulic >>> fluid, purchase the smallest quantity you can get. >>> >>> John Price >>> >>> >>>> On Nov 19, 2022, at 4:20 PM, Flesner via KRnet <krnet@list.krnet.org> >>> wrote: >>>> >>>> ?On 11/19/2022 2:33 PM, Steven Willman via KRnet wrote: >>>>> The lady drove through an intersection trying to stop. I value my >>> life and the lives of my family so I don?t let brake fluid get old. So >>> tell me that there is a difference between brake fluid used in a car and a >>> plane.!!!!!!!!!!! >>>> >>>> >>> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >>>> >>>> If all brake fluids were the same all containers would simply be labeled >>> "brake fluid" and not identified as one of the half dozen or more >>> different types sold. Know your system and go with what the manufacturer >>> specifies. >>>> >>>> I suspect there is more to the story of the lady than mentioned here. >>> If it were simply "old brake fluid" we'd have a lot more people killed in >>> accidents than we do now. I'm guessing that not one in a thousand cars on >>> the road have their brake fluids changed in their lifetime. I've owned >>> autos / trucks for 50+ years, driven them for a dozen or more years with >>> some past 200,000 miles and never once had brake fluid changed and not once >>> noticed reduced braking action other than worn pads. My current Buick is >>> 15 years old with 140,000 miles and my previous truck was 16 years old with >>> 226,000 miles and I know for a fact the brake fluids were never changed. >>> As always, YRMV................................ >>>> >>>> Everyone has an opinion based on their own experiences so go with what >>> makes you comfortable. It that doesn't work, try something different. >>>> >>>> Larry Flesner >>>> >>>> -- >>>> KRnet mailing list >>>> KRnet@list.krnet.org >>>> https://list.krnet.org/mailman/listinfo/krnet >>> -- >>> KRnet mailing list >>> KRnet@list.krnet.org >>> https://list.krnet.org/mailman/listinfo/krnet >>> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://list.krnet.org/mailman/private/krnet/attachments/20221119/f3739790/attachment-0001.htm> >> >> ------------------------------ >> >> Subject: Digest Footer >> >> -- >> KRnet mailing list >> KRnet@list.krnet.org >> https://list.krnet.org/mailman/listinfo/krnet >> >> >> ------------------------------ >> >> End of KRnet Digest, Vol 194, Issue 1 >> ************************************* > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet -- KRnet mailing list KRnet@list.krnet.org https://list.krnet.org/mailman/listinfo/krnet
