EpitrochoidMan

Has anyone tried completly flushing the regular coolant(green stuff) and running their systems with GM dex-cool (orange stuff), to see if there are any cooling improvements? Or, if dex-cool might be better on the water seals?

Just a thought.


_pistons suck

GEB

I'm not an expert on this, however, I've had my 3rd gen for 6 years and I have never read anything postive about dex-cool with rotary engines. If I recall correctly it apparently eats up the water seals...

Let someone else correct me if I'm wrong.

Go to www.scuderiaciriani.com for more info.

GEB.

evot23

iTrader: (17)

I believe there was a thread on this a long time ago. Another thing we debate about! LOL

Searched but couldn't find the thread. And for what its worth, I've also heard bad things about the "Dex".

EpitrochoidMan

I'm certainly not trying to say anything good about dex. I was just curious if anyone had tried it with good results. At the shop I work at we replace a number of GM radiator caps each week b/c they have become corroded from the dex cool and it is not a 100,000mile coolant. I've seen dex coolant systems not flushed for 100,000 miles and the stuff looks terrible and doesn't protect nearly as well as it should when it's that old. But, due to the rotary's constant battle against heat I was just curious.

BrianK

I did it. There was no noticeable difference. That said, my radiator end tanks ruptured a couple weeks after the flush, so maybe I just never had a chance to really test the difference.

It's not a good idea however. If you're thinking about doing it, don't. Changing from one kind to another causes unfriendly chemical reactions.

EpitrochoidMan

Unfriendly chemical reactions

I found when dexcool and green stuff are mixed they turn into mud. Last week I was talking with a Pennzoil chemist and he said that shouldn't happen, but I've seen it alot.

If you switch for one to the other be sure to really flush the system well.



_pistons suck

pomanferrari

iTrader: (1)

I would not use Dex Cool. Chrysler moved away from it.

It's packed with alot of acid to counter corrosions but for some reason doesn't work well unless the engine is specifically designed for it.

There was an article in Car and Driver 2 years ago about it.