Mobil 1 FS x1 5W-40

[Mathson]

Mobil1.ru shows a new product from EM for their russian market.
Mobil 1 FS x1 5W-40 "Cleaning Technology" states on the label.

https://mobiloil.com.ru/ru/motorniye-masla/mobil-1/mobil-1-fs-x1-5w-40

 

[Mathson]

MSDS states

DISTILLATES (FISCHER - TROPSCH),
HEAVY, C18-50 – BRANCHED, CYCLIC AND LINEAR CAS 848301-69-9 30 -< 40%

 

[OVERKILL]

I may be mistaken but with the process named, that appears to be GTL.

 

[Garak]

Yep, that sounds right to me.

 

[Quattro Pete]

So, what does "FS" stand for? Fairly Synthetic? Formerly Synthetic?

I noticed it started appearing on some M1 labels in the US as well.

 

[Garak]

Must be another oil company invented word or acronym or abbreviation.