I am not saying ignore, but instead leave it and see if the system continues to clean itself out. I have already seen that the cooling system is getting cleaner by driving it.
It may be dex-cool sludge. When the thermostat failed and I removed the radiator cap I had to scoop out orange mud like paste. It may be that the mechanic who R/R'd the head saw rusty colored coolant and used Dexcool. Does't Dexcool usually leave a stain near external seals? I haven't seen any evidence of that. On Sun, Jun 3, 2012 at 6:13 AM, John Reames <jwrea...@comcast.net> wrote: > Dex-cool sludge? > > -- > John W Reames > jream...@verizon.net > Home: +14106646986 > Mobile: +14437915905 > > On Jun 3, 2012, at 0:23, Brian Toscano <brian.tosc...@gmail.com> wrote: > > > Thank for the suggestions. > > > > Where I live, I don't have the option for a garden hose to run for 20-30 > > minutes. What I have done instead is to pour gallon jugs of water > through > > the heater core radiator, and engine. I am not sure if the garden hose > has > > enough pressure to make the process go faster than pouring gallons in by > > hand. > > > > The problem has been the coolant is still getting dirty. I don't think > the > > engine is making rust, but there must be some sticking to parts that is > > slowly coming out. Similar to how synthetic oil can clean out an engine > > over time. > > > > The weird part is how the coolant separates, with the heater core or > > expansion tank seeming to have more rusty water than the radiator. I > think > > this must happen after the engine cools off. I would think the water > pump > > moves the coolant around enough that it remains mixed when the engine is > > running (except for the expansion tank). > > > > > > On Sat, Jun 2, 2012 at 10:05 PM, Scott Ritchey <ritche...@nc.rr.com> > wrote: > > > >> My rescue 300TD had lots of rust and crap too. I flushed the heater, > >> radiator, and engine individually with a garden hose until only clear > water > >> came out. I had an old trigger-style hose nozzle that fit inside the > small > >> hoses nicely with the aid of a hose clamp. Fresh coolant (less than 3 > >> years > >> old) should inhibit corrosion. > >> > >> -----Original Message----- > >> From: mercedes-boun...@okiebenz.com [mailto: > mercedes-boun...@okiebenz.com] > >> On Behalf Of Brian Toscano > >> Sent: Saturday, June 02, 2012 1:52 PM > >> To: Mercedes Discussion List > >> Subject: Re: [MBZ] Coolant question (related to my Jeep cooling system > >> work) > >> > >> Last night I drained the coolant from the drain plug on the radiator. > What > >> came out first was bright green. After a little bit, it turns rusty > brown, > >> and then turned to dirty coolant. This was just draining. Likewise, > what > >> is in the expansion tank is typically rust colored and when I poured > clean > >> water into the heater core, what came out was rust colored. What I > removed > >> the water pump what I saw was dirty coolant, but the inside of the > engine > >> (outside of the cylinder wall for #1) looks perfectly fine and > rust-free. > >> It makes me think the coolant does separate as it cools. > >> > >> The water pump itself looks fine also. A gasket leak developed on the > top > >> of the pump after I did the first round of flushing. > >> > >> What has the most crap buildup are the heater hoses. The supply and > >> return to the heater core have a rust buildup inside. The lower > radiator > >> hose has a large spring in it almost the entire length and that spring > >> holds a ton of crap. It makes me wonder where all this rust comes from > if > >> the inside of the engine looks fine. > >> > >> On Mon, May 28, 2012 at 8:39 AM, Brian Toscano > >> <brian.tosc...@gmail.com>wrote: > >> > >>> I considered that the dark radiator has an effect on the coolant. The > >>> bright green when in the radiator is almost clear in a coolant tester. > >>> However, what's in the expansion tank is darker. The original problem > >> has > >>> been fixed. The flushing I did definitely helped. I'm not expecting > >> 100% > >>> perfectly new looking coolant in 11 year old engine with cast iron > block > >>> and head. > >>> > >>> > >>> On Sun, May 27, 2012 at 9:26 PM, Max <meadedil...@bellsouth.net> > wrote: > >>> > >>>> Remove a sample from the radiator and another from expansion tank to > >>>> compare side by side; it's awfully hard to judge color inside a dark > >>>> radiator. > >>>> > >>>> Did you fix the original problem? > >>>> > >>>> I think your flushing method failed. > >>>> -- > >>>> Max Dillon > >>>> Charleston SC > >>>> '95 E300, '87 300TD > >>>> _______________________ > >>>> > >>>> _______________________________________ > >>>> http://www.okiebenz.com > >>>> For new and used parts go to www.okiebenz.com > >>>> To search list archives http://www.okiebenz.com/archive/ > >>>> > >>>> To Unsubscribe or change delivery options go to: > >>>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >>>> > >>> > >>> > >> _______________________________________ > >> http://www.okiebenz.com > >> For new and used parts go to www.okiebenz.com > >> To search list archives http://www.okiebenz.com/archive/ > >> > >> To Unsubscribe or change delivery options go to: > >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >> > >> > >> _______________________________________ > >> http://www.okiebenz.com > >> For new and used parts go to www.okiebenz.com > >> To search list archives http://www.okiebenz.com/archive/ > >> > >> To Unsubscribe or change delivery options go to: > >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >> > > _______________________________________ > > http://www.okiebenz.com > > For new and used parts go to www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
