There is some eye opening and semi-scary information here. What about the Amsoil foam filter? I've been using that for quite a while now and wonder if I should goto a good paper filter.
When your owners manual says change at 5000 miles, it does not mean to leave it at least that long, it means don't leave it any longer. There is no damage done by changing oil early.
The original owner of my car ran Syntec from the first change. When I got it I immediately put in Mobil 1. Next change wnet to Royal Purple. At 2000 miles the pressure dropped sharpley and the dip stick had these strange flakes of crap on it. 4th change Amsoil went in and several years later I...