Mineral, SS, FS. It's all so confusing.

Went and spoke with actual oil guys and they dropped some knowledge on me. Long story short story (kasi beer daw bayad ko para sa lessons) the term FS as we know if is basically just marketing. What counts as "synthetics" really? Different guys have differential opinions. Best gauge so far is base oil classification (group 1,2,3,4 or 5).

There's tons if info out there. There's even that case where Mobil sued Castrol because of all this - should crude oil, when processed enough, be counted as "synthetic oil"?

Gulo. So after multiple rounds of beer, my standard for me is that, for me to accept something as FS, it has to be a group 4 or 5 base (PAO, esters, etc). Please don't sell me something that's called FS that uses group 3.

The whole conversation about SS can be summed up in a statement that stuck with me - "cguro naman lahat nang pinoy may dugong kastila - e di lahat tayo pwede nang tawagin na "semi-spanish" 😂

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Stay hungry. Stay humble.