Amsoil.com

But I use Mobil 1 with a Motorcraft filter. (Used Fram for the firs 50k miles. )

Thinking of trying a Mobil 1 filter on the next change, but splitting hairs at this point. Why not Amsoil? I just don't put enough miles on the car to make it worthwhile, since I actually do less than 10k per year, and the Amsoil recommendations are 25k or 12 months, IIRC.

Function before fashion. '96 Contour SE "Toss the Contour into a corner, and it's as easy to catch as a softball thrown by a preschooler." -Edmunds, 1998