Originally Posted By: gonefishing
Originally Posted By: gonefishing
The MSDS for the EP formula lists the PAO information but the MSDS for the AFE version doesn't. I can only assume it has a good amount of PAO but just not as much as the EP version.
I found some new information that I thought I would add to this post.
For whatever reason, today I decided to go back and look at the Mobil 1 0W-20 MSDS. Looks like it has been updated. The MSDS now lists base stock composition. You have to download the MSDS files so I can't link directly to the information. Instead I screen captured this information and uploaded it as a picture:
Just like the EP version of Mobil 1 0W-20, "1-DECENE, HOMOPOLYMER HYDROGENATED" is now listed under composition. If you do a search on this chemical, you will find that it is a form of PAO base stock. The concentration is "30 - < 40%" versus the "60 - 70%" on the MSDS for the EP version:
I guess it would be safe to say that Mobil 1 EP 0W-20 contains about twice the amount of PAO as the regular Mobil 1 0W-20 (assuming this MSDS information is correct).
That is correct, the EP is using a good amount of PAO. They detergent level is higher as well. Thanks for posting the updated MSDS.