Not on this Planet!
We do have a certain member or maybe another that are both using the PBR 10W-30 in gas engines with interesting results. If this stuff can clean diesel piston rings, then why not gasoline engine piston rings? A good test would be mixing Valvoline Restore and Protect and PRB!
What is group 5? I never heard of G5. I'm only aware of 1-4.
All others not included in G1-4, which would include Esters for example.
So G5 is mystery oil.
Esters are in G5
Extra Virgin Olive Oil (EVOL) also meets the criteria for being group 5. The mystery deepens.
Bio lube!
I think in their European Vehicle Full Synthetic 0W-30. on the SDS for this oil it says 1-Decene, tetramer, mixed with 1decene trimer, hydrogenated 68649-12-7* >= 20 - < 30. I don't know for sure, but this might be group 4. It would be more than 20% and less than 30% by volume.
I thought esters are in G4. Are esters in both G4&5 or only G5?
Only in G5
I also just finished two 8k mile OCI’s on two of my vehicles using the Valvoline Premium Blue Restore (Gen 2), both gasoline engines with excellent results. It is a fully formulated oil using a CK-4 additive pack.
This is my somewhat rough guess just from reading, not college. Castrol Euro Car 0W-30 A3/B4 has too much zinc and some other additives to meet the EPA SP or SQ plus the SP has to have the lower HTHS value for the sake of pulling an extra 1/10 of 1% fuel milage increase on the engine test stands for CAFE standards compliance. and yes, I am exaggerating. This Castrol 0W-30 meets ACEA C3 which requires an HTHS value of >3.5. Mobil 1 ESP 0w30 also meets that ACEA value. I have been told by oil tech employees that most EURO oils actually exceed the API ratings in many ways, but can't meet certain API ratings, say the HTHS value and Catalytic converter protection with their additives. Another example is Royal Purple HPS 5W-30. It carries no API ratings at all; they don't even try. The HTHS value on that 5W-30 is 3.8. Because of that and the additives they use to add their "Synerlec" magic potion, they can't meet API ratings. None of the Royal Purple API rated engine oils have the "Synerlec" in them. I am sure some of this is not exactly right, hopefully you get the idea though. It is about having too much anti wear additives and making the HTHS values too high to meet the API specs.
3 jugs for $275 on eBay
I can get you a better deal for 2 gallons and it is not ebay, it would be right from Cummins, and it would be about $169.00 with tax shipped right to your door. You were looking at the Gen2 stuff, I have 2 gallons of the Gen1 stuff, what many people do not realize is that there is more Gen 1 Oil out there than Gen 2 Oil.3 jugs for $275 on eBay
