friends car,taurus with 80k miles. changed his oil 2 weeks ago with 5 quarts maxlife 10W30(few small leaks)and a MC FL-400S. five quarts puts it a hair over the full mark, all was good and i sent him on his way. He does not know much about cars, the other night he sent me a pic asking whats the light on his gauge cluster. I didnt get up till 6 and he sent the pic at 1am, it was his oil light. He told me he drove for 5 miles with it on, until he got home. So yesterday, I checked the oil, and it was WAY over full, 2 inches over. I then changed the filter with a Napa Proselect, and started the car, no light, no weird sounds except for a loud squeal, sounds like a belt or pulley, but he told me when the light came on, it started squealing. no knocking that i can tell. So, what would have made the oil level jump so much? could the MC filter have failed, as the light didnt come on with the napa filter? and could the squealing be signs of internal damage?
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