Originally Posted by BillyE
My point is that Chevron is not making a claim as to fewer DPF regenerations. Your point is that in the event of DPF plugging failure, more regenerations may be initiated by the ECM. I understand that but instead I look at it as this new oil is purported to allow a longer life of the DPF before this happens. This is also how Chevron has phrased it.
The reason I'm choosing to say it this way is that an oil change to this new oil cannot by itself change the regen cycle to any significant extent. It probably will change the regen cycle after you have run the oil for dozens of OCIs and have not serviced the DPF. I guess I started from the assumption that the DPF would be serviced according to the manufacturer recommendations, which are generally specified at an interval so as to not impact performance (regens or otherwise). This oil would allow the manufacturer to extend that DPF service interval, or possibly allow for a redesign of the DPF unit itself.
However you want to state it, do we agree that a single oil change with this new oil will not have any significant impact on fuel economy or regen cycle, within that single OCI?
You are correct; in that link to that article, Chevron did not specifically state the lube would reduce regens. They stated that it would clog the DPF less. They also state it will retain fuel consumption.
As I have already stated, the dP across the DPF triggers regens. The less it clogs, the lower the dP, the fewer the regens. Also, the fewer regens, the less fuel consumed.
I'm smart enough to read in-between the lines.
I would agree the sensible gain in improvement will likely come after a few OCIs. How many? I don't know because they didn't say. But a 3% gain in fuel retention and 2.5 longer span in clogging is worth the committment to using the lube. And again, if you pair it with a FBC, there's probably a very good chance one can really cut down on the regens and extend DPF lifecycle. If you only drive your Dmax or PSD 4k miles a year, you probably won't see much advantage very soon. But if you use the diesel every day, I suspect the advantages will reveal themselves reasonably quickly.