Currently I have Mobil 1 10w30 and I am trying to figure out how often to change it. The Z is a garage queen and only gets maybe 200mi a year. The Odo is at 22000. I figure a year with Synthetic is good enough. Should I switch to the Extended Performance Mobil 1?
Follow Ups
Life expectancy of Mobil 1 - outazway13:56:46 03/06/07