coolant on 1998 Cadillac DeVille

i just bought a 98 cadillac deville , is has green egine coolant in there, but the car orginally takes orange dex-cool, should i change it back to the original brand? If i change back to the orignal orange dex-cool whats the consequences?

by in Saint Albans, WV on April 10, 2010
2 answers
ANSWER by on April 10, 2010
All coolants are very similar. If your owners manual says use dex-cool then use it. If it does not specify, you are safe to use any type of coolant. I recommend buying a premixed 50/50 solution.
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ANSWER by on April 10, 2010
There shouldn't be anything wrong with that. The problem is if you use dex-cool which is rated a lot longer than traditional coolant and you mix them the dex-cool loses its superior performance. So just use dex-cool and when adding only use the same and it will last longer.
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