Best 0w16 oil?

[chris719]

It must be socialism. Someone's got to be paying for all that, "Free Health Care".

Or maybe the fact that it's a notorious trade protectionist on a somewhat remote continent with no major cities on the northern half that is importing the product? It also does so at a lower volume than some other regions because it's got only 3x the people of NYC.

 

[ZeeOSix]

Doesn't seem like it's been enforced much over the past 24 years though. I've seen plenty of manuals on cars that spec 0W-20 or 5W-20 that contradict the advice in the that letter.

That's because both are 20 grade oil at 100C operating temperature. The CAFE letter doesn't address that. 0W-20 wasn't really around much if at all in the year 2000, but 5W-20 was.

 

[chris719]

That's because both are 20 grade oil at 100C operating temperature. The CAFE letter doesn't address that. 0W-20 wasn't really around much if at all in the year 2000, but 5W-20 was.

I feel like I'm a failure if you don't think I know by now the difference between winter rating and SAE high temp grades / J300 KV100 .

Anyway, I think I may not have communicated my point well. The letter from EPA was for all manufacturers looking to spec energy efficient oils. So it would cover any 20 grade presumably. I have owned cars in the mid 00s specifying 5W-20 that don't obey the guidelines in that letter and use language such as "preferred", for example. Directly contradicting their sternly worded letter.

 

[ZeeOSix]

I feel like I'm a failure if you don't think I know by now the difference between winter rating and SAE high temp grades / J300 KV100 .

Anyway, I think I may not have communicated my point well. The letter from EPA was for all manufacturers looking to spec energy efficient oils. So it would cover any 20 grade presumably. I have owned cars in the mid 00s specifying 5W-20 that don't obey the guidelines in that letter and use language such as "preferred", for example. Directly contradicting their sternly worded letter.

Like I said before, 0W-20 wasn't really around for consumers in 2000. But 5W-20 was, kind of. If 0W-20 was a thing in 1999-2000, then the letter might have mentioned it. That was my point to your comment in post 100.

Keep in mind that letter is 24 years old, so who knows what the actual requirements were when the dust settled, and if things morphed over the years. Many OMs obviously use the word "preferred" these days, and have for quite some time. Maybe they didn't early on in the CAFE/EPA requirements game back in the early 2000s. Find some old OMs from the early to mid-2000s that speced 5W-20 and see.