I work in a parts store and every car or truck I see with dexcol in
it has a corroding problem. I have also seen that GM is being sued over
using dexcol. I guess that if it was me I would flush the cooling system
and go to green.
I put 80k on my s10 before trading it in on my silverado and didn't have any
corroding problems. Didn't ever get around to flushing it either. One of
the dexcool sites says it reacts with air so its best to keep the overflow
tank overfull and replace the radiator cap with a good stant one. I did
both and never got any of the sludge or gelling crap.
DExcool is not the culprit people think it is. I don't think you should run
it for 150k like the manuial says but I wouldn't change it out for green.
One big issue is a little green with dexcool will make sludge so on the off
chance you don't get it all out you could make a bigger mess of things.
Prestone now has "Big Yellow" which is supposed to be safe for anything and
mix with anything. Next change it's what I'll use.
Lets See DEXCOOL
Gm Stands behind Dexcool.
The reasoning is that They KNOW it will EAT your Gaskets.
Well when it Eats thu your Head gasket or Manifold gasket..
60% of you will say it is too expense to Repair the vehicle , and Rush
right out and Buy yourself a NEW GM PRODUCT !!
DEXCOOL is The BEST SALEMAN GM HAS !!
You have Dexcool but don't worry about it. Just keep the reservoir full and
be certain to add with Dexcool and not the old green stuff. The gasket
problem is with late 90 and perhaps with early 2000 cars.
Thanks Rich but I have a 01 Chevy Silverado 1500, an 02 Pontiac TA WS6,
and my girl friend has an 02 Grand Am GT all in addition to the 04 2500
HD I just bought. The WS6 I have is a long, long term relationship. I
never plan on selling this car. At this point all I want to know is how
to flush this crap out of my cars and replace it with the stuff that
has been working well for decades.
Anyone know the best, most complete and safe way to flush this crap out
of the cooling system and replace it with the green stuff?
We usually get our oil changed at Jiffy Lube or some such place. How
long do you think it will be before one of the guys working there tops
off the coolant with some non-compatable stuff.
Coolant use to be simple, everyone used the green stuff. I'm sure there
is some great reason why GM went to Dexcool, anyone know what that is?
More expensive? unique to GM so you have to buy their stuff and pay
There are many sites on Dexcool. Many about the lawsuits and many about
what it really is: It seems to me that there are dozens of forums that beat
the issue to death without any real conclusion.
What GM says:
I have not and do not intend to change to the old stuff but I also maintain
the level myself. You can buy most anywhere, including WalMart.
There is also a question as to if you might void the warranty if you change
before it expires.
The problem seems to be with particular models and years where the coolant
was not compatible with the gaskets. Seems to even be a question there.
Also it appears to be very important that it not be allowed to get low,
getting air into the system.
Sad part is that there is a huge group of trial lawyers out there willing to
sue for anything.
The Switch is because the orange is supposed to be better on aluminum parts.
You will do far more damage to your vehicles taking them to jiffy lube than
you will leaving in the orange coolant, if you care about any of them
change your own oil.
One of the guys that i work with has an 04 trailblazer and it already
has corroding in the cooling system along with gelling. He took it to
the dealership and they told him nothing waswrong with it. What a joke.
They just didn't want to admit that dexcol is no good. I have a friend
that works at a GM dealership and he told me that dexcol eats at the
gaskets and at the aluminum intake. I have had to replace intake gasket,
water pump and radiator on a 97 GM. And working at a large parts
distributor I see this day in and day out on GMS that are 95 and newer
with dexcol in them. GM can say what they want, I see it with my own two
eyes all to often.
Yes there are a bunch of new coolants that are compatible with
dexcol. One of them is the BIG YELLOW bottle by prestone. and there are
several others. Just look at the bottle and it will tell youif it is
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