gm dex cool

[chopped39]

That stuff is garbage.
There are law suites pending I believe w/the use of Dexcol.

Type it in on a search engine like google.

I bought a new 97 Silverado, it had 29,000 miles on it & the fliud looked like mud. This is the 100,000 mile coolant, I know for sure my coolant system could not make it to 100,000 miles w/that coolant.

It has corroded intake fittings,on my truck & on others friends truck,same crap.

Then I hear of people running it w/no problems.

IMO,stay away from it,the old green Prestone is fine.

I believe the law suit is done.My budddy got $600.00 a year ago.Thats if you filed with the suit.I did my 3.1 twice.The second time I used the permadry gaskets so that problem is fixed. Got rid of the dex cool though. You got to love when you pull the intake off of a 20,000 mile car and see the mung in the coolant passages. I would go with the green.Why reinvent the wheel like Gm did with dex

 

[KevinB]

I've always wondered if peoples issues with the dexacool is from some tech at a fast oil change place topping it off with a standard coolant. I've heard that mixing dexacool with anything else causes all these problems. I've seen/bought used cars with it. Some had low mileage and the dexacool looked like crap and some with high mileage and the stuff looked new. I just did an engine change over the weekend in a 2000 pontiac gtp. It was never serviced and the dexacool looked good (too bad the owner ventilated a piston. Lol)

 

[novaderrik]

the best thing to do is imagine that Dex Cool is the rabbit in this clip and do what they do at the 2:00 mark..
run away...
YouTube - Holy Grail - Killer Bunny

 

[redhotrod]

I found my own answer, advance auto has Peak in concentrated green still. Picked 2 of these up yesterday for $12.49 each

 

[A2000RICH]

I've always wondered if peoples issues with the dexacool is from some tech at a fast oil change place topping it off with a standard coolant. I've heard that mixing dexacool with anything else causes all these problems. I've seen/bought used cars with it. Some had low mileage and the dexacool looked like crap and some with high mileage and the stuff looked new. I just did an engine change over the weekend in a 2000 pontiac gtp. It was never serviced and the dexacool looked good (too bad the owner ventilated a piston. Lol)

the problem with dexcool happens only when air is allowed to get into the system and the temp rises above about 190------causes a breakdown resulting in MUD--------its easy to demonstrate in a beaker with a bunsen burner------if there is no air there is no mud!!!-------problem is that most folks just fill the radiator and count on the overflow system to finally remove all the air-unfortunatelly this never really gets all the air out------a small amount of air always remains------many new cars have bleeder ports at the highest point in the cooling system to eliminate this problem----GN's don't----if the system is filled with a vacuum extraction filler (costly and bothersome) like Snap-On and other companies make (and the car factories use) there will never be a problem with dexcool-------i use it in some of my nicer cars that sit for years and see little use but for normal drivers i don't-------as for adding standard coolant to dexcool they are compatible------BUT it creates one problem------even a small amount of standard coolant will reduce the optimum life expectancy of the dexcool to that of standard coolant, ie from 5 years to 1--------RC

 

[charlief1]

the problem with dexcool happens only when air is allowed to get into the system and the temp rises above about 190------causes a breakdown resulting in MUD--------its easy to demonstrate in a beaker with a bunsen burner------if there is no air there is no mud!!!-------problem is that most folks just fill the radiator and count on the overflow system to finally remove all the air-unfortunatelly this never really gets all the air out------a small amount of air always remains------many new cars have bleeder ports at the highest point in the cooling system to eliminate this problem----GN's don't----if the system is filled with a vacuum extraction filler (costly and bothersome) like Snap-On and other companies make (and the car factories use) there will never be a problem with dexcool-------i use it in some of my nicer cars that sit for years and see little use but for normal drivers i don't-------as for adding standard coolant to dexcool they are compatible------BUT it creates one problem------even a small amount of standard coolant will reduce the optimum life expectancy of the dexcool to that of standard coolant, ie from 5 years to 1--------RC

Excellent info Richard. Thanks. The info you just posted is basically what a GM rep told me years ago and I trust you more than a factory guy.:biggrin: