The oil inside your car's engine can sludge up with neglect and infrequent oil changes. Sludge is a nasty contaminant that can destroy an engine if not given attention, but timely oil changes are a ...

You don't drive much, so you don't rack up miles. Or you've been out of town, so your car sat in the garage. Will the oil ...

That “engine cleaning” bottle sounds reassuring. But when it comes to sludge, more cleaning isn't always better.

Toyota Motor Sales U.S.A. Inc. has reached a tentative agreement to settle a nationwide class action by Toyota and Lexus owners who complained their car engines were damaged by oil sludge. A federal ...