Can someone enlighten me as to the specifics of Ford's WSS-M2C153-H spec?
I understand this spec includes the requirement of meeting a double ASTM sequence III test, which includes parameters relative to wear, sludge,
% of viscosity variability, etc.
My guess is Mobil 1 5W-30 would meet the double sequence III criteria. I could be wrong.
What are the other criteria within the Ford spec, which seem to "disqualify" anything but a 0W-20, or 5W-20 oil? Is it simply a cSt@100° <9?, or is there more to the story.
As a Hydraulics Engineer, I have facilitated numerous bearing killer tests, although higher loads than automotive applications, and feel somewhat more comfortable using an oil demonstrating a cSt@100° of 9.2 - 12.0 / HTHS >3.0, in my Cobra. Maybe I'm just old school...
Thanx for any input!