Originally Posted By: gfh77665
Originally Posted By: Rat407
Any reason not to follow what is printed in the owners manual? As stated above, they have a chart to follow according to various temperatures.
Yeah. Its still CAFE compromised.
Had CAFE never existed, 10w-30 would likely be called for extensivly throughout the US except for frigid regions.
And that same "CAFE compromised" oil still works great. Yes, it's CAFE, yes it's government mandated, yes it's primarily for FE and yes, it's primarily recommended N.America and Japan. A huge swath of consumers want better, no matter how miniscule, mpg. They are fine with thin oils and could really care less what's espoused on this forum since CAFE works for them now, and has since the late 70s.