A few years ago I changed from standard green coolant over to the orange stuff. Well, today I had some over heating issues. As we started pulling hoses and pulling the thermostat my 2 diesel mechanic sons start chewing me out. Apparantly, when the orange stuff gets old, it breaks down and turns into mud the likes of which I'd never seen before. Even with the thermostat out, the car runs too hot, telling me that I have this brownish goo all throughtout the cooling system.

Now, the orange stuff is probaly great if you keep to a good maintenance schedule and flush it every year or 2. But if your the forgetful sort like me, you may want to think twice. Looks like I have at least 3 cooling systems to drain and flush.

sounds more like deathcool. zerex g-05 shouldnt do that

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have no worries.....President Obama swears "If you like your gun, you can keep it

That's your problem, the MB coolant is a pee/light yellow color. The orange "extended life" DexCool junk is just that, junk.

Dexcool will do that, thats why its junk. You would probably be better off with the green stuff.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

dexcool is nasty stuff. we have to change the dexcool pump at work about once a month because it eats the orings and plunger. the green just went bad after probly 6 months

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have no worries.....President Obama swears "If you like your gun, you can keep it

Notice the Google ad at the bottom of the page says "Dexcool investigation"? My moms Olds has had it since say one and still has all the original cooling system parts. We must be lucky.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

running a benz without the stat it will overheat.

that is a bypass stat and with it out completely most of your water will bypass the radiator. it will go from the block to the pump and back to the block. so flush it well and put your stat back in after testing it or better yet put in a new one. behr i think is the preferred brand. 80 degree stat.

good luck

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

That also happens when Dexcool is mixed with the older type coolant. In some cases, it is important to completely eliminate the old coolant prior to changing coolant types. (A thorough flush is never a bad idea, but in some cases is essential.)

You beat me to the punch there....this or worse can happen when you mix incompatioble types without a thorough flush.

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Deathcool turns to mud even in GM cars which have never had any other kind of coolant. I can't believe they still make that krap.

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Palangi

2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg



TRUMP .......... WHITEHOUSE
HILLARY .........JAILHOUSE
BERNIE .......... NUTHOUSE
0BAMA .......... OUTHOUSE

Why are you towing horse trailers with you MB??

Maybe I missed something, but MB coolant is NOT orange. It looks more like watered down ice tea.

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

Jerry said he was pulling hoses, not horses!!!

And who said MB coolant was orange, anyway? I'm guessing that what you have been drinking was not iced tea!!!

what is a little consonant among friends.

heh heh.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Was it an orange consonant, or a green consonant?

Just don't let the horses drink coolant!!!

so, since dexcool is now death cool to me, what do I do?
My mom has a 04 grand prix that she wants to drive into the ground (at the slowest rate possible)... Its going for a 50k service this summer(all fluids, all filters, hoses, T-STAT, new belts, new tires, new misilanious interior crap ((TKS GM))...)

Should I have them change the coolant type? or can I just do a flush and refill to save some $$ ?
~Nate

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95 Honda Shadow ACE 1100.
1999 Plymouth Neon Expresso. 2.4 swap, 10.5 to 1 comp, big cams. Autocross time attack vehicle!
2012 Escape, 'hunter" (5 sp 4cyl)