I disagree with you saying zero real life benefit. Increased capacity and another filter mounting up does a couple of small but still helpful things. It does help with fuel dilution effects because percentage wise there will be less fuel given the volume of oil tracking the same mileage. These 6.7 PSDs with their in cylinder fuel dosing for DPF cleaning are fuel diluters,thinning out the oil. It also helps cooling a bit with another filter increasing surface area.
1) increased capacity is ONLY useful if you extend the OCIs. Otherwise, it's just more expense with no relevant use.
2) the fuel dilution net-positive effect will be minimal; it's there ... but it's small (roughly the volume of one filter and the line set)
3) the "cooling" is irrelevant because these types of engines already use the engine coolant to control the oil temps. The added capacity of oil in the aftermarket filter won't make the engine or oil any "cooler" than what the temps are held at normally. Further, for every ying there is a yang ... More capacity also takes longer to come up to operating temps; that can be detrimental in cold climates
Amsoil just needs to design a kit with bigger hoses for less pressure drop.
Amsoil refused to acknowledge that as an issue, yet I'm calculating close to a 15psi drop. That puts this close to 15psi at idle a 30psi working hard spinning under boost. Amsoil must think because the low oil pressure light doesn't come on, there is no problem. I have called and emailed them. They won't, I mean can't send me any data where they tested it on a 6.7 PSD. This is not a crack at Amsoil. I'm just frustrated with the thought of spending $490 and them not being able to prove it doesn't restrict flow or pressure. I wouldn't have bought it had i known this first, my mistake. They just say, it doesn't...please believe us.
Well you have two choices
- believe them
- don't believe them
If you don't believe them, you can always do your own testing. Buy the system, install it, and use some high-quality gages installed before/after the lines and take some readings. Then pay to have your own larger ID lines made up, and test them again.
Seems to me you want to accuse them of a poorly designed product, but you've got nothing but some suspicion on your side. You accuse them of not having test data, and yet you have none of your own.
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You've not said why you are going this route. I suspect it's because you're under some impression that using BP is going to help your engine last longer. That is patently false. BP filters do NOT extend the life of an engine. BP filters extend the lifecycle of oil.
Clean oil helps an engine last a long time. Clean oil can be achieved by two methods
- OCIs with a frequency such that the contamination load in the sump is kept at a reasonably low level
- high efficiency filtration which removes the particulate loading from the sump
Either is an acceptable means of maintaining an engine in a healthy state. Clean sumps are not an exclusive state of BP filters; OCIs also keep a sump clean.
Two roads to the same destination.
So if you intend to run really long OCIs, then I would agree BP filtration is a must.
If you intend to OCI at OEM levels (or shorter), then BP filters won't make a hoot of difference in terms of wear control. Is it worth your perceived risk of flow starvation to get no realized benefit in wear control? That's up to you.
