Question about Pontiac Bonneville

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SMELLED OIL IN CAR VENTS. LOOKED AT COOLANT RESEVOIR AND IT HAD OIL IN IT. OIL DIPSTICK AND OIL CAP LOOKED CLEAN, SO I SUSPECTED UPPER INTAKE MANIFOLD LEAK. WHEN MECHANIC CHANGED MY VALVE COVER GASKETS AND MANIFOLD GASKET BECAUSE OF LEAKS, FOUR DAYS LATER MY ROD BEARINGS WERE WASHED OUT, BUT THEY SAID THEY DIDN'T MESS UP MY ENGINE. THE NEW OIL CHANGE THEY DID WAS PITCH BLACK WITH A HINT OF GAS SMELL! WHAT DID THEY DO TO MESS UP MY CAR?

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  • JOSEPH STARCEVICH Mar 25, 2011

    I TOLD YOU THAT AFTER THE GASKET CHANGE AND OIL CHANGE, THE OIL WAS BLACK LOOKING AND THE ENGINE ROD BEARINGS WERE WASHED OUT. I ALSO SAID THERE WAS OIL IN THE COOLANT RESEVOIR, NOT COOLANT IN THE ENGINE BECAUSE THE DIPSTICK WAS CLEAN BEFORE THE MECHANIC DID THE GASKET AND OIL CHANGE. WHAT DO YOU THINK NOW ?

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If the leaking gasket was a long term problem, the bearings may have been ready to fail. A standard procedure when replacing any gasket that has possibly been leaking anything into the engine is to do an oil change. If I read your question right, sounds like this wasn't done, if it was, then it would be hard to fault the shop. Any coolant or fuel that leaks into the oil will degrade the lubrication properties of the oil possibly to the point of metal to metal contact causing the bearings to fail.

Posted on Mar 25, 2011

  • jayberry2 Apr 12, 2011

    If there one type fluid leaking one way, the other will leak the other way. I still bet it has coolant in the oil. If you want to make sure have the oil tested [ Most autoparts stores have this service available ].

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