quote:I had to get Castrol to snail mail me all the specs on their SL oils. I posted a thread about that the other day actually.
Originally posted by jjbula: I bet many key specs have changed as they did with Pennzoil. My hunch is the changes reflect Group III base oil properties vs. PAO in the older formulations. Dated comparisons aren't necessarily valid. Call me cranky but, as a matter of principle, I won't buy an oil with an outdated spec sheet. Can't even find a spec sheet on Castrol Syntec.