Originally Posted By: dparm
Mobil markets EP as the top-of-the-line oil. AFE is marketed as being just beneath that, and regular M1 as below that.
Supposedly the additive packs in EP & AFE are similar, with EP's being geared more towards long oil change intervals. If you aren't planning to run it for 10k or more, just stick with AFE or regular M1.
+1.....My last OCI on M-1 0w20 AFE was at 9,200.
According to tig (a Mobil user for eons), 0w20 AFE can easily do 10K, and he believes even more. But to be safe, his OCI's are at 10K, and that would be my limit as well.
For those of you who are into even longer OCI's, EP in combination with a Fram Ultra filter would be perfect for up to 15K.