Originally Posted by tex_n_cal
About every 5-6000 miles. And I use Mobil 1. Oil does not wear out, it gets dirty. If your oil isn't clear, it's time to change it.

When I growing up in West Texas, Dad changed it every 1000 miles, but that was a dusty climate.


You must not drive a diesel. You'd be changing your oil every 200 miles if you went by the motto if it isn't clear you must change it.