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Interesting read about DexCool, (with pics)

Old 03-11-2007, 10:22 PM
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Josh...the old what you can't see can hurt you applies here. The problems develop with in the engine and coolant passages. Because the stuff is so sticky it adheres to things inside. By the time you see indications in the expansion tank, things have gotten really bad. Once the Dex is exposed to air (low coolant levels) it turns quite acidic.

I've been a proponent of the G05 green "all makes/all models" for years, and have used it in all the vehicles I own and service and have been happy with it. As I generally buy used cars, they come with the Dex. It'* the first thing to go!

GM in its quest to make for a "maintenance free" car for what was the usual new car buyer (100k mile plugs, 5 year anti-freeze, etc) went down the wrong path. Ford and Chrysler went with what had been going on in the European markets - the G05 type.
Old 03-11-2007, 10:37 PM
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Good points. I told them to change it shortly after I got my car. They took it in to a shop to do it, and they told them to not worry about it doesn't need to be done... Blah blah blah. So they just said "Ok." and went home. Plus, when they found out how much it cost, they really didn't want to do it. lol

That'* why I've been watching their coolant as often as I can. I was just saying theirs still looks perfectly fine, but I get your point too, and I'm sure it'* just a matter of time...
Old 03-12-2007, 01:51 PM
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Gotta love that GM quote:

Originally Posted by GM
"You should be maintaining your maintenance free cooling system" .
That'* classic right there.
Old 03-12-2007, 04:01 PM
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Originally Posted by BonnevilleLErocks
Originally Posted by ten_gigahertz
What'* strange is that my parent'* truck runs DexCool. I have been keeping an eye on it every time I go out to see them. Their'* seems to be fine still, nice bright pink and no slime in their radiator that I can see. They have a '99 Sonoma with a 4 cylinder engine.

So, I don't get why it obviously hurts our engines, but some seem to be fine...?

I smell a recall in the future
Its not a safety concern.....no recall. Sucks, but its true.
Old 03-12-2007, 05:46 PM
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I'm still using Dex, but I drain it out every 6 months. I'm coming up on a Dex change in June.
Old 03-12-2007, 08:33 PM
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Originally Posted by MACDRIVE
I'm still using Dex, but I drain it out every 6 months. I'm coming up on a Dex change in June.
It probably would be wise to change out your LIM gaskets with it, then. :?
Old 03-13-2007, 12:29 AM
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Originally Posted by TrueWildMan
Gotta love that GM quote:

Originally Posted by GM
"You should be maintaining your maintenance free cooling system" .
That'* classic right there.
wait, did GM actually say that?
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