1995 Cadillac DeVille Q&A

1995 Cadillac DeVille Question: Blown head gasket Northstar 4.6L

Loosing 2 gal. of coolant about every 30 miles. -
Answer 1
the more you drive it, the more damage you do to the motor. you need a shop to do a leak down test to confirm the number of cylinders effected by the failure. then they can give you a bid based on ther results. then after this is done, they need to find the original issue as to why it overheated. the head gaskets are a result of the overheating not the reason for overheating. it will be costly to the point that it may require a new or rebuilt motor. thanks for using repairpal Roy -
Answer 2
This could always be your timming cover gasket that needs to be replaced. -
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