Originally Posted By: QuadDriver
Im surprised Amsoil is still relevant.
Since I cannot find a 15-40 marine oil for my boat I still use that, but otherwise they dont make anything I can use (and I suspect just about the rest of the car buying public is the same)
Originally Posted By: BMWTurboDzl
My opinion has always been the AMSOIL's super extended drain oils have always simply consisted of a predom-PAO base w/an overly robust additive package. With the new standards focusing on oil which is 'emissions system friendly' this places a limiting factor on the amount of additive AMSOIL can use. Hence I think you're going to see their newer oils tell you to follow OEM intervals. A perfect example is their "new" 5w-30 Euro.
Relevant? Amsoil sales continue to grow as car manufacturers extend their recommended OCI's. You cannot simply deny the success of SSO 0W-30 or any of the new OE line. I would say "the rest of the car buying public" is increasingly happy with maxing out or extending their OCI. My ave Joe neighbor across the road with the same Ody (his is a 2007) as we have, asked me if I change with the Honda reminder, I said no, I 2X it. He asked me how.....now he does the same and is so happy....he's thinking 3X!! People are choosing OE at quick lube places. I can't keep ATF, the other marine oils, 2 stroke oils in stock and come spring, I can't have enough MC 20W-50 in stock. All very relevant choices.
5W-30 Euro oil (AEL) is designed exactly and specifically as a Low-SAPS Formulation - and the worry with diesel particulate filters (DPFs), so yes you are correct in this case. However, contrast this with SSO. A relatively low Zn/P formulation, but does fine in extended OCI's. Even API XL which can go 10K plus, ie not stick with mfr recommended OCI's.
As for the topic at hand, I think ASL/ATM are due for a reformulation anyway. Can't wait!! Yes they could meet SN, but with all the other new formulations holding up so well, those oils need to be notched up.