Let me jump in. The above analysis shows 7 to 10%
MORE Ca and Mg compounds in the sample of the EP version. That is out of the noise range, but comparing different labs data can be an issue.
The Advanced was already a high performance OLM lubricant. And there are many non earth metal compounds used in the DP/EP packages that are
NOT visible on the type of analysis. We also don't know the base oils.
I am also seeing only a $1.50 pricing difference at my local store. I also so the higher spec Valvoline MB/VAG 5W40 is 3 to 4 dollars less than these ILSAC EC oils.
The Valvoline synthetic are excellent oils, use with confidence. I have and I have good UOA's with 50% extended OC interval to back this statement up. And that was the Advanced FS.
This interval, I am using a 10W30 on my Ford 5w20 spec car and this specific engine example enjoys the Quaker state FS moreso than anything else. - Ken