There has been a lot of recent commentary about using full-SAPS oils, especially in applications where a GF-6 or GM Dexos 1 Gen 3 oil is specified. Supposedly, the main benefit is the higher P/Zn content and arguably, higher levels of detergency in some products.
The full-SAPS 502.00 (and even 229.5) specifications were introduced in the early/mid 2000's. I recognize that in some situations, there is no replacement for P/Zn, but I am curious if we are getting too fixated on the higher P/Zn levels...when it isn't even needed or beneficial in most situations.
It seems odd to me that oils using an additive system based on a ~20 year old standard can still be "superior" to a modern Dexos 1/Gen 3 based product. Putting the P/Zn debacle aside, what other benefits do these older full-SAPS oils have that the more modern mid-SAPS oils do not?
The full-SAPS 502.00 (and even 229.5) specifications were introduced in the early/mid 2000's. I recognize that in some situations, there is no replacement for P/Zn, but I am curious if we are getting too fixated on the higher P/Zn levels...when it isn't even needed or beneficial in most situations.
It seems odd to me that oils using an additive system based on a ~20 year old standard can still be "superior" to a modern Dexos 1/Gen 3 based product. Putting the P/Zn debacle aside, what other benefits do these older full-SAPS oils have that the more modern mid-SAPS oils do not?