Check Engine light is on and there is a ominous whirling sound coming from my engine? [more inside]
posted by slowtree on Apr 14, 2009 - 13 answers

If we lowered the speed limit nationally to 55mph, how much fuel would we save? [more inside]
posted by mikeyk on Oct 13, 2008 - 31 answers

Can someone explain the importance or relevance of different weight engine oil? How much and why should your local climate affect your oil choice? [more inside]
posted by mdion on May 7, 2007 - 9 answers

CarOilFilter: Oh, dear lord. I put oil in my car tonight, and thought everything was fine until ... [more inside]
posted by brina on Mar 3, 2007 - 20 answers

Is the 3,000-mile oil change a scam? [more inside]
posted by holgate on Dec 29, 2005 - 24 answers