Mobil 1 cleans less well than Pennzoil Ultra,so don't worry about being too clean.
Really? Proof will be coming soon?
According to SOPUS:
http://pureplus.pennzoil.com/
(half way down the page)
Quote:
Disclosure
3 Based on pistons from standard V6 engine in ASTM Sequence IIIG piston deposit test using SAE 5W-30. Does not apply to Pennzoil Ultra Platinum™ 0W-40.
5 Based on pistons from standard V6 engine in ASTM Sequence IIIG piston deposit test using SAE 5W-30. Does not apply to Pennzoil Platinum® Euro Products.
11 Based on pistons from standard V6 engine in ASTM Sequence IIIG piston deposit test using SAE 5W-30. Does not apply to Pennzoil Platinum® Euro and Pennzoil Ultra Platinum™ 0W-40. Pennzoil Ultra Platinum™ keeps pistons up to 25% cleaner than Mobil 1; up to 35% cleaner than Valvoline® SynPower®; and up to 40% cleaner than Castrol® EDGE® with SYNTEC®. Pennzoil Platinum® keeps pistons up to 8% cleaner than Mobil 1; up to 17% cleaner than Valvoline® SynPower®; and up to 20% cleaner than Castrol® EDGE® with SYNTEC®.
However, I don't know if that means that PP and PUP are better at cleaning out desposits that are already there. It may just refer to the ability to prevent deposits from forming in the first place. Potentially two different things.
We are all aware of what SOPUS says.
Right.
And you post Mobil links and info as though no one here has read or seen them.
Op.
Mos2 is different than the organic moly found in all other oils. It's a solid lubricant that when under heat and pressure is forced into the microscopic irregularities of metal surfaces and reduces metal on metal as it layers.
Getting back to tigs comment what oil companies do say add additives?
The answer is none.
I'm not picking on you buddy I'm just stating an observation.
I can say from experience using mos2 for years and years that I've never seen any accumulation or ring coking whatsoever on the 2 engines I've torn apart (for fun) that used it. The 4.6 2v in my mustang had it in the sump for many years and over 100000kms and upon teardown the engine inside was spotless.
And the cams even to this day haven't rusted in my garage shelf and are very slick to the touch,even dare I say hard to keep a hold of.