No. SN Plus and then SP.Wasn’t SN where they started getting serious on LSPI?
SN had no LSPI mitigation factored in to it.
No. SN Plus and then SP.Wasn’t SN where they started getting serious on LSPI?
Well, that’s when it was harmonized - R&D started in 2011 and individual formulators started dealing with it. Buster has mentioned how far back Mobil 1 did …No. SN Plus and then SP.
SN had no LSPI mitigation factored in to it.
Around 2012’ish is when Mobil went to Ca/Mg LSPI friendly additive system.Well, that’s when it was harmonized - R&D started in 2011 and individual formulators started dealing with it. Buster has mentioned how far back Mobil 1 did …
Dexos 1.2 is a 2015 release …
Because a UOA would not be able to see the particles?Are those looking for GDI soot? Because my understanding is that GDI soot is considerably finer than diesel soot, I posted the size specs on here some time back. So that number may not accurately reflect both the volume, and subsequently the effect that GDI soot has on engine parts.
Because whatever they are using to determine the soot percentage would traditionally have been calibrated for diesel soot and I was curious as to whether their recommendations and observations might change if it was GDI soot, based on the studies I've read on GDI soot, which has different properties.Because a UOA would not be able to see the particles?
This practice is based on trending and distribution response analysis from mid-infrared absorption measurements. While calibration to generate physical concentration units may be possible, it is unnecessary or impractical in many cases. Warning or alarm limits (the point where maintenance action on a machine being monitored is recommended or required) can be determined through statistical analysis, history of the same or similar equipment, round robin tests or other methods in conjunction with correlation to equipment performance.
All API licenses are miscible per the license requirements.Hi.
Is it possible to mix API SM and API SN in one engine? Is it possible that additives create some particles (such as oxides or salts) that can damage the engine? I am from Europe and API SM is hard to find.
Thank you
Without a reduction in performance? Such as 5w40 mixed with 15w40?All API licenses are miscible per the license requirements.
You might be on to something.This oil probably has more phosphorus containing compounds like ZDDP than SM or higher allow, hence the SL rating.
Of course not. SAE will be the same.Without a reduction in performance? Such as 5w40 mixed with 15w40?
That wasn't the question, and API licenses aren't directly related to grade anyway. Miscibility definitely is not.Without a reduction in performance? Such as 5w40 mixed with 15w40?
That wasn't the question, and API licenses aren't directly related to grade anyway. Miscibility definitely is not.
So mixing would not be advisable between grades? Would that not be more accurate? Am I understanding that correctly?All API licenses are miscible per the license requirements.
0.1% would be 1000 ppmBut yet nearly all of the GDI UOAs we see (that are measured by good labs) have soot at 0.1% or less. That’s 10ppm. I find it hard to believe that alone would cause the number of failures reported.
Without a reduction in performance? Such as 5w40 mixed with 15w40?