when i put my car in reverse it vibrates, i think it is the engine; but it only vibrates when engine is cold. BUT it does not vibrates when i put in D, even if it is cold..I never drove my car without warming up ever before..I use to put mobile 1 oil, but i used royal purple this time. I keep my car neat and clean. Please help me; Thank You
Oct 5, 2010 at 11:02 PM