Quote:I've been going with approx. 3k oil changes at the dealership because I only drive about 5-6k miles per year. The dealership uses MC oil and filters.
Well, sure, but it passes all the Ford standards (as we would expect from a mMotorcraft product), SM/GF4, etc., etc. It is always mentioned, Mr. Pablo, with the accompanying statement, "For the price", and "For 3-5K OCI". Amsoil and M-1 sales are safe!
Quote:I tend to agree. The difference between Chevron 5R, the Group II+ used in Havoline and Chevron 5w20/5w30, and the Group III from Korea that ConnocoPhillips uses is probably neglible at best. Most oil companies meet the SM specs with Group II+. Connoco Phillips chose to meet it by using a blend of a lower VI Group II and a (marginally) higher VI Group III. Just my
I don't buy for one microsecond the simplistic and unsupported notion that going "to a syn-blend" was the only avenue open to ConocoPhillips (the blender of Motorcraft oils) to meet SM specs. It was simply a way, and a very cheap one at that, since ConocoPhillips scored an exclusive distribution coup in the U.S. for Group III base stocks from Korea's S-Oil company.