Im not able to find a single SAE20 oil on U.S Mobil Delvac page. Thats just a coincidence?
https://www.mobil.com/en/lubricants/for-businesses/heavy-duty-lubricants
Newest Scania oil is 11.9cst, mid 30 grade (LDF-4).
https://trans.info/en/scania-wins-e...ard-for-most-efficient-long-haul-truck-384676
Im guessing truckers are not very knowledgeable
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