You won't get anything representative of these companies from me. I'm just sharing some of what I picked up along the way here. Where you draw the line on fuel amounts in oil is your call. They are saying it's good & the testing is backing that up so if you're not going to take any of that evidence what will?
HPL is a niche oil mixer & they have done well working with board members here. I'm sure they have technical data to back up their claim. You may have to buy & run some oil their oil for them to work with your specific engine along with testing. HPL has high starting viscosity on some of their oils & that could be just one of the reasons it's holding a good viscosity with the fuel.
Bypass filters that are lower micron rated will filter out more wear particles than a standard oil filter. Your saying b/c they filter out more wear particles that the UOA isn't accurate? A UOA with or without a bypass filter will show PPM wear on a UOA accurately b/c it's testing the Oil. They both are using a sample of the oil & measuring wear particles.
However, I think I have an idea of what you're trying to say. A non bypass set up would measure 5ppm & a bypass would measure 2.5ppm. In a sense "hiding wear on the engine". This may be true if your looking at engine wear. What we are looking at in this situation is the OIL condition. The oil condition is what is being examined in this situation. No one here is asking what the state of this 6.7L power stroke engine is in per se. They are asking what does the OIL's condition look like & could it remain in the sump for a bit longer. The UOA is showing us that the oil has fairly low contaminates & is stable even considering the fuel.
If there was no bypass on this truck it could've potentially had double the wear & consequently needed to be dumped but that is not the case. They have a bypass that is keeping this oil cleaner & is capable of running longer in the engine.
What is Fuel Dilution in Engine Oil and Why is it Bad?
Fuel dilution occurs when petrol or diesel fuel infiltrate your engine’s crankcase and dilute, or “water down,” the engine oil. What causes fuel dilution and how much is too much?
This brand is also well respected in the forum and worldwide, they claim 3.4% and the user uses their 2 micron bypass filter with absolute efficiency.
In general there are many brands like Castrol, Total etc that talk about fuel.
Here they try to justify the high % of fuel as the wear is low, as I said it seems correct to me but without additional by pass filtration system.
I am not opposed to filtration, I am not opposed to the fact that the less wear the better, I just do not agree with the % of dilution and it must be recognized that in this engine there is 1 quart of fuel. Such an amount of fuel makes me panic and I was very shocked by the non-conviction of not changing the oil, which has already worked about 400 hours.
If this oil being inside the engine since 2021 was responsible for keeping the wear down for me this is a won battle, but if we have an Amsoil by pass filtration system with 2 microns of efficiency it makes me doubt if the wear is really representative at all.
Maybe in Bitog you are not seeing daily analysis with dilution and you are very optimistic, instead in other parts of the world we have a huge respect and fear at the same time of fuel dilution.
I love bypass filtration and have installed it in many of my cars and I certainly think they make sense but against dilution they cannot cope and this factor is determined to set the oil change.