Kinda what I figured. My '02 owners manual says
"Only use oils “Certified For Gasoline Engines” by the American Petroleum Institute (API). Use Motorcraft or an equivalent oil meeting Ford specification WSS-M2C153–H." and "WSS-M2C153-H with API Certification
Mark".
I expect that if T6 5W-40 were held only to the 2002 API requirements it would far exceed them. But since these requirements are now 15 years old, they have been refined and tightened. My wife drove this vehicle for most of its life and she used the cheapest oil and filter the quick-change oil place would install. I'm going to go with T6 5W-40 at the next change, assuming it stays readily available and the cost doesn't increase significantly.
I'm also strongly thinking about an Amsoil (or equivalent) dual bypass filter. I'd like to be able to fill the filter before installation, and that can't happen with the stock arrangement, so if I'm going to a remote mount, why not get the benefit of 2 micron filtration? Is there any system comparable to the Amsoil that is of equal or better quality, and less costly?
"Only use oils “Certified For Gasoline Engines” by the American Petroleum Institute (API). Use Motorcraft or an equivalent oil meeting Ford specification WSS-M2C153–H." and "WSS-M2C153-H with API Certification
Mark".
I expect that if T6 5W-40 were held only to the 2002 API requirements it would far exceed them. But since these requirements are now 15 years old, they have been refined and tightened. My wife drove this vehicle for most of its life and she used the cheapest oil and filter the quick-change oil place would install. I'm going to go with T6 5W-40 at the next change, assuming it stays readily available and the cost doesn't increase significantly.
I'm also strongly thinking about an Amsoil (or equivalent) dual bypass filter. I'd like to be able to fill the filter before installation, and that can't happen with the stock arrangement, so if I'm going to a remote mount, why not get the benefit of 2 micron filtration? Is there any system comparable to the Amsoil that is of equal or better quality, and less costly?