Green coolant in radiator but orange in reserve.

Tiny
T!NK
  • 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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Saturday, March 2nd, 2013 AT 9:49 PM

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Tiny
ASEMASTER6371
  • EXPERT
  • 25,554 POSTS

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

Roy

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Saturday, March 2nd, 2013 AT 9:57 PM
Tiny
T!NK
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Which color is best to use? I would like to avoid major repairs !

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Sunday, March 3rd, 2013 AT 1:53 AM
Tiny
ASEMASTER6371
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Use the global coolant. Then it wont matter. Good stuff.

Roy

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Sunday, March 3rd, 2013 AT 1:56 AM
Tiny
T!NK
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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 !

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Sunday, March 3rd, 2013 AT 6:19 PM

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