Dexos1 Gen2 - no 0W-20 Mobil 1?

[FB09l]

Found it interesting that there is no 0W-20 Mobil 1 (just 5w30, in fact) on the Dexos1 Gen2 list. It's an interesting list given the goal of certifying oils to combat LSPI. I noticed Pennzoil's 0W-20 present. I

Is this an issue where the Mobil 1 did not meet requirements or XOM has not put it through the testing process yet? I would have assumed it would have been tested at the same time the 5w30 was tested.

Ironic that Pennzoil's 0W-20 with it's much higher calcium would make the list given the LSPI concerns of Dexos1 Gen2, but Mobil 1 with lower calcium, higher magnesium mix would not. This observation is based purely on articles and threads posted around here linking calcium and LSPI.

 

[geekster]

The list is still evolving. Mobil will make the list, imho, and so will others. Good point on the Pennzoil and the calcium. I was thinking the same thing last night. I wonder if calcium really plays that big of a role in this. If it did, I would think that SOPUS would have to alter the amount of calcium to meet that need. Hopefully someone else can explain that.

 

[ARCOgraphite]

OEM can complain about ash in oil, but It REALLy boils down to aggressive timing and compression combined with LOW octane fuel. I have to run a couple gal of 93 in my Rogue QR25DE LOW COMPRESSION engine with SPF injection or it detunes to slug power.

4 valves + high static comp = high cyl pressure = BANG!

 

[North to Alaska]

No Pennzoil Ultra, at all, on their list. Just the Platninum.

 

[Garak]

We went through Platinum first, then Ultra, the first time the dexos1 list came out. Given the way the list is looking, I suspect oil companies are focusing on their biggest sellers first, like PP and vanilla M1, then start playing with the less common varieties and viscosities. I would gather that having a 5w30 certified dexos1 in your biggest selling lineup with be virtually mandatory to maintain that market share.

 

[North to Alaska]

Originally Posted By: Garak
We went through Platinum first, then Ultra, the first time the dexos1 list came out. Given the way the list is looking, I suspect oil companies are focusing on their biggest sellers first, like PP and vanilla M1, then start playing with the less common varieties and viscosities. I would gather that having a 5w30 certified dexos1 in your biggest selling lineup with be virtually mandatory to maintain that market share.

That makes sense. Thanks

 

[yvon_la]

It happen at high rpm with delvac . I would like to test a plain oil (nothing added for fun . I suspect its that additive that cause various problem

 

[fafafooey]

What is LSPI?

 

[Bud_One]

Originally Posted By: fafafooey
What is LSPI?


Low speed pre-ignition