New(er) Mobil 1 formulation, can anyone translate into layman's terms?

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Product Name: MOBIL 1 5W-30
Revision Date: 26 Jul 2022

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So basically a switch at some point from a 10-20% PAO base to 20-30% GTL?
Well, we have no idea what the other 50-60% of the base oil blend is. They may not be calling out PAO (they usually do, but that doesn't mean they aren't here), so all we can really infer is that this oil has around 20-30% of its base oil blend comprised of GTL.
 
Items 1 and 5 are various forms of ZDDP. ZDDP is an ester molecule containing phosphorus atoms, zinc atoms, and sulfur atoms.

Item 2 is an anti-oxidant.

Item 4 is Molybdenum Dithiophosphate or MoDTC. MoDTC is a molecule containing phosphorus atoms, molybdenum atoms, and sulfur atoms.

Items 3 and 6 comprise two of the base oils and it most likely contains other base oils as well.

In finished formulated blends, the base oils may be comprised of two or more base oil types of various viscosities with a DI package and Viscosity Index Improvers.
 
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We can also conclude that the balance of the base oil blend is not mineral Groups I, II, and III as they would be listed. The remaining 50-60% of base oils is much too much for POE and AN, so most likely PAO. PAOs are often listed on SDSs but I don't know why they should be as they are non-hazardous. Maybe XOM came to that conclusion.
 
This is an old Mobil 1 document from 2006 that describes their change to GTL formulation starting at page 27. Seems the view at the time GTL was a equal replacement.
https://physics.usc.edu/Undergraduate/temporary/mobil-1-new-live.pdf
That was back when they were still building their own GTL plant in Qatar, which they pulled out of after spending billions.

I've posted several slides from that on occasion, it as it does a good job of showing Mobil's focus on performance above and beyond what is required for various approvals with their Mobil 1 product line.

All of the comparison data is between the PAO formula and the VISOM one, which was in production for a LOT longer than anticipated.

They eventually started buying GTL bases from SOPUS of course, after the costly abandonment of their own plant and extended use of VISOM. This was primarily due to the cost advantage, even over their own PAO.
 
We can also conclude that the balance of the base oil blend is not mineral Groups I, II, and III as they would be listed. The remaining 50-60% of base oils is much too much for POE and AN, so most likely PAO. PAOs are often listed on SDSs but I don't know why they should be as they are non-hazardous. Maybe XOM came to that conclusion.
Are you saying that besides the 20-30% GTL that the rest of the base oil makeup is PAO?
 
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