mobile 1 since 87k. i have 103k now and not using any oil. I use mobile 1 filter as well.

 

I changed to Mobil 1 at 70,000 miles, now at 89,000 and no problems. I akso use Mobile 1 filter, I forget the number, but it's the one for old Mopars and Fords. It is a full size filter instead the dinky one that looks like it belongs on Briggs and Stratton.[sm=americanasmiley.gif]