Originally Posted by BillyE
Originally Posted by dnewton3
Originally Posted by BillyE
This has nothing to do with regens.
Actually, it does, per this article where Chevron reps made specific indications regarding regens and DPFs
https://www.trucknews.com/transportation/chevron-unveils-a-lubricants-game-changer/1003095061/
I don't mean to belabor this point, but that article does not mention regens or soot. The article talks about plugging from ash and increasing the service life of the DPF. That's the impact that can be attributed to the oil. You can't possibly burn enough oil to contribute to soot in any meaningful way. Ash on the other hand is not removed in DPF regeneration and builds over hundreds of thousands of miles.
DPFs clog with PM (particulate matter); that is comprised of soot and ash.
The regen cycles are generated by the dP (pressure drop) across the DPF filter. The more clogged it is, the more restrictive it becomes, and therefore the more often the system will call for a regen cycle.
And I quote from the article:
"
Delo 600 ADF significantly reduces the rate of DPF clogging, extending DPF service life by up to 2.5 times, and bringing a 3% fuel economy retention advantage over the life of the equipment, delivering significant savings to customers."
Now I quote myself from a previous post:
"
If this lube product, along with things like FBCs (fuel borne catalysts) aimed at reducing PM (particulate matter) from the combustion process, all work towards lowering the ash and soot content in the exhaust stream, they could induce a significant improvement in reduced regen cycles."
I never said that the new lube will reduce soot. I said that if the new lube is combined with the use of a FBC, the two together would reduce both ash AND soot. (the lube reduces ash; the FBC reduces soot).
Both conditions (less ash, less soot) are beneficial in that they clog the DPF at lower contamination rates. Less contamination means fewer regens. I might agree with you that regens do not burn away ash. But regens are initiated by the dP across the filter, and when there is less ash present, there is less clogging, and therefore lower dP; hence less regens.
You imply that the new lube will not reduce regens. According to the article, that is untrue. And the reason it's untrue is because less ash (a key characteristic of the new lube) will mean less clogging of the DPF, which has the effect of fewer regens.
In short, I agree with you that the new lube will not reduce soot; it does, however, reduce ash.
I disagree with you that the new lube will not reduce regens, because ash IS a contributor to DPF clogging, and therefore less ash has the effect of less regens, and Chevron clearly has the information stated in that manner.
The reduced regens (due to less ash) have resulted in lifecycle improvements of 2.5x, and less fuel consumption (3%; primarily because of less fuel burned due to fewer regens). NOTE: they even call it "3% fuel economy retention". Why "retention"? Because that fuel economy loss is associated directly to the fuel burned in the regen cycle.
Less ash = fewer regens = better retained fuel economy.