1984. New Nissan pickup. Mobil 1 of course.
I stopped many years ago when Castrol started selling technosynthese as Full Synthetic, then Exxon Mobil followed.
Then I started again a few years ago - but knowing that it was just " Premium Motor Oil "
And not the classic majority base PAO synthetic or POE we know and love - or hate.
Premium and Regular PCMO meet the same spec - but one may beat it in ways, and the other in other aspects of performance.
I am so disappointed that many here mistakenly think they are running "synthetic oil" in their car.
Man, the brainwashing is complete.