Question about 1999 Cadillac DeVille

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Coolant disappears andthere licaeum - 1999 Cadillac DeVille

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Does coolant disappear with no sign of leakage. If so, then you might have a porosity leak. Unfortunately, this is a common problem with Cadillac motors. The internal surfaces of the engine components become porous and actually begin to absorb coolant. This can also occur in any engine that makes extensive use of aluminum. I do not know of an easy fix for this problem at this time. I don't think block seal will work in this case. A replacement engine might be the best solution to this problem. Check for oil in the coolant before scraping the motor.

Posted on May 25, 2011

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Posted on Jan 02, 2017

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