My 2004 Cadillac Deville says to check the coolant level I
looked at the container and it is very very low the color
liquid is green can I add the dex-cool on top of it I really
don't have the money to get it drained
I wouldn't add it, never mix coolant types. Just go out and buy a gallon of prestone green coolant at walmart for $10.
Adding more coolant is best but in a pinch add water as it is better than overheating the engine.
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