Mechanics

CHEVROLET TAHOE COOLANT PROBLEM

1998 Chevrolet Tahoe • 200,000 miles

Green coolant in radiator but orange in reserve box. Will this cause a problem? I have heard dexcool will damage gaskets. Some will say mixing those colors won't cause harm but others say it will. Thanks in advance for any advice you provide.
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T!nk
March 2, 2013.




Yes, it will turn into a gl and will cause all kinds of coolant system issue. Drain everything and refill with one type.

Roy

Which color is best to use? I would like to avoid major repairs !
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Tiny
T!nk
Mar 3, 2013.
Use the global coolant. Then it wont matter. Good stuff.

Roy

So I am leaning more toward using the old fashion green since that's the color in the radiator. I found out they actually make green dexcool as well. This is a used truck and I have no idea what brand they used. If I simply drain and add regular green - will this be fine or will I need to get a flush. It is still winter time where I stay.I was wondering about the coolant that's in the engine block - I don't know if it stays or evaporates. Thanks for the help !

Tiny
T!nk
Mar 3, 2013.

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