Are you saying that this analysis shows raised wear materials? With 2ppm CU, 4ppm AL and 7ppm FE and 0 nI often wonder if the raised wear materials values are due to the M1 cleaning up some residual deposits. Be interesting to see if it trends down over OCI's.
They did some light towing of 1500 lbs but the 2/11 UOA is about spot on with the 5/14 UOA so I doubt it's the oil.I often wonder if the raised wear materials values are due to the M1 cleaning up some residual deposits. Be interesting to see if it trends down over OCI's.
The lower tested viscosity is speculated to be from the residual previous grade left in the engine. How do these analysts dream such explanations/comments up.
Exactly. As imperfect as this one example may be, I am not seeing any benefit to running this oil over the specified 0W20.The wear rates are completely within expected norms; this is typical variation one can expect from any UOA series.
There is ZERO ability to see singular UOA results and ascribe reasonable conclusions based on grade, brand, base-stock, etc.
The oil did it's job and the engine is in fine shape. End of story.
This truck is very lightly used, rarely short-tripped with plenty of highway miles, and has had nothing but very high-quality oils like M1 EP, Castrol Edge EP, and now M1 FS on 5k mile OCIs - if there are residual deposits of any kind I'd be very surprised.I often wonder if the raised wear materials values are due to the M1 cleaning up some residual deposits. Be interesting to see if it trends down over OCI's.
Agreed. 5k mile OCIs should be leaving very little, if any, "residual" to clean up. It would venture into the topic of the "residual" oil left in an OCI, and since there's no way to know how much that is (not SAE or OEM study exists), then it's moot.This truck is very lightly used, rarely short-tripped with plenty of highway miles, and has had nothing but very high-quality oils like M1 EP, Castrol Edge EP, and now M1 FS on 5k mile OCIs - if there are residual deposits of any kind I'd be very surprised.
I guess they have to write something...lol. This guy is a chemical engineer and he stated Mobil 1 FS 0W-40 is barely a 40-grade to start and that they almost always see it sheer down to a 30-grade on UOAs. Interesting that the same thing happened on the 2022 Kia Soul with a 2.0 with only 4,000 miles on the oil.The lower tested viscosity is speculated to be from the residual previous grade left in the engine. How do these analysts dream such explanations/comments up.
I have a buttload of it because it was on sale and really cheap. I bought it for the Kia just to "hedge my irrational bets" with that engine and then figured why keep multiple grades? Everything will now run on 0W40 - vehicles, lawn mower, generator, snow blower, etc.Exactly. As imperfect as this one example may be, I am not seeing any benefit to running this oil over the specified 0W20.