Got a 86 G54. Always ran great. One very cold morning started and ran for about 5 secs. and then something happened. Started a deep squeal and some sort of mechanical resistance became apparent. Thought it was spun bearing and pulled pan. No metal but odd pieces of hard plastic or gasket present. Also looks like some valve cover silicone. What could be the cause other than a bearing? Runs fine although I have stopped driving it. Thanks
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