indianrefining
Full Access Member
My original intent was that i thought it would help add to the discussion of the original post to make note of the differences between group III and IV oils, thinking it was rather common knowledge...
But im sticking to my guns on this and ill insist in making my point, but with all due respect, i am not intending to slam, slander, or otherwise criticize anyone for what they know or dont here... Ive done much reading on this and wanted to share somthing i learned is all. I may have missed somthing in my reading but here is an article that sums up nicely what ive been trying to communicate....
http://en.wikipedia.org/wiki/Synthetic_oil
"Hydrocracked/Hydroisomerized = API Group III base oils. Chevron, Mobil, and other petrochemical companies developed processes involving catalytic conversion of feed stocks under pressure in the presence of hydrogen into high quality mineral lubricating oil. In 2005 production of GTL (Gas-to-liquid) Group III base stocks began. The best of these perform much like polyalphaolefin. Group III base stocks are considered synthetic motor oil in North America.[4][5] "
So better stated, since we ARE in North America... Mobil is not a Group IV synthetic, but rather a group III synthetic, asuming they switched from group IV (1974) to current group III... Implied by said article of reference... group III as stated in said article, is derived from mineral oil stock (aka Dino).
LOL oil discussions!!!! =P
In all honesty, I'm not certain if Mobil 1 is formulated from a Group III or Group IV (PAO) base. (I'm sure that ExxonMobil would say that that is proprietary information.) Given the very minor differences beween Group III (especially Group III+) and Group IV (PAO) lube base oils, though, I can't see any point in paying the higher price for ANY "synthetic" PCMO. I, for one, will stick to my good old "conventional" HAVOLINE.