Finally going to get a new vehicle, 04 Explorer with 4.0 OHC. Been a long time for such a purchase so here are my intentions oil and filter wise. As seen here some where, run it hard, full throttle every opportunity, coast after for the first 300 miles. Change the oil and filter, at 300 miles to remove the manfacturing metals, please recommend a good dino oil to complete the break-in, or how about M1? I have Amsoil SDF 15 filters left over from the previous vehicle for use. When is a good time to change over to Amsoil syn? Thanks in advance.
WDP