CK-4 oil also meeting SP

My 12 quart bag in box Mobil 1 0w40 is indeed SP rated
OP looking for CK-4/SP & that product isn't CK-4.

My Delvac 1 esp 5w40 is only CK4

hmmm... its very possible I'm looking at an old website/document. Mobils website is like a labyrinth. This page here does say SN as a "meet or exceed" but its very possible its incorrect.

https://www.mobil.com/en/lubricants...-lubricants/products/mobil-delvac-1-esp-5w-40

EDIT: even the website "title" is weird and out of date so very possible
The Delvac 1 Truck & SUV 5w-40 is rated below:

API CK-4, CJ-4, CI-4Plus, CI-4 API SN, CaterpillarECF-2, ECF-3
 
Delvac 1 ESP 5w40 not rated SP

IMG_1231.webp
 
Thanks, this looks like it might be the winner. I do wonder why there aren't any 5W-40 CK-4/SP oils.
Certifications and Performance claims would suffer with the lower Phosphorus amount SP requires (0.08% mass max). It would lose Ford F1 Specification as just one example. There are a few 15w40 and 10w30's as show in the database already CK/SP & it must not be a big seller to offer CK-4/SP. However, from what I've seen these oils tend to be just a general multi-fleet HDEO/Gasoline oil & nothing really special. The lower Phos. could help if running it in a gasoline application but there are already 5w-40's for gasoline engines anyways so CK-4 wouldn't be a requirement for that.
 
Last edited:
Back
Top Bottom