I agree that if you keep it in a clean & dry environment, these hydraulic fluids probably will still perform quite well after 5 or even 10 years on shelf, especially considering our uses in the experimental world which is far from heavy duty use of breaks anyways.
By the way, my whole gallon of hydraulic fluids did even last half a year because Friends in the next hangar or others across the isle would "borrow" and used it up rather quickly...! Cheers! Dr. Hsu On Sun, Nov 20, 2022, 12:50 PM Randall Smith <crz...@yahoo.com> wrote: > I am in the group that you buy a gallon can you use it until it's gone. My > last gallon lasted 10 1/2 years. Long as the top is on it and you don't > get moisture or dirt inside it does not go bad. It's just like 100 low lead > it never goes bad. The blue will separate from the fuel but the fuel itself > will maintain its octane rating > > Sent from my iPhone > > On Nov 19, 2022, at 8:16 PM, Dr. Feng Hsu via KRnet <krnet@list.krnet.org> > wrote: > > > 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 >> > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet > >
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