...and it def. saved my butt today. Evidently when I changed the oil 1,500 miles ago I didn't tighten the filter enough.

The oil dripping down onto the exhaust piping made smoke which I saw rising from under the hood. I had only lost about a quart, but still glad I saw it when I did. Might be a PITA for a clean oil change but I really don't mind it after today...