A few years ago, when API SM was transitioning to API SN, people keep talking about ILSAC GF-5 that is considered the ultimate standard.
Back now, people are aware API SN-RC may not meet ILSAC GF-5 but ILSAC-GF5 definitely meets API SN-RC.
In regards of Mobil1 product, interesting that their Mobil Super series is ILSAC GF-5 and API SN-RC approved, but their Mobil1 series only ILSAC GF-5 except the HM and newly AP that is also SN-RC.
So if they promote their synthetic is better, then what is the threshold of the oil maintain their GF-5 & SN-RC standard before it was considered shot and need to be changed ?
Interestingly M1 HM is also not GF-5 certified even though their Zn and P level is the same with the GF-5 version.
THe question is whether it is really does matter of GF-5 and SN-RC between brand to choose oil if it is used on standard OCI ? Or we should look into other standard that is more indicative of the oil robustness for turbo or extended drain ?
Back now, people are aware API SN-RC may not meet ILSAC GF-5 but ILSAC-GF5 definitely meets API SN-RC.
In regards of Mobil1 product, interesting that their Mobil Super series is ILSAC GF-5 and API SN-RC approved, but their Mobil1 series only ILSAC GF-5 except the HM and newly AP that is also SN-RC.
So if they promote their synthetic is better, then what is the threshold of the oil maintain their GF-5 & SN-RC standard before it was considered shot and need to be changed ?
Interestingly M1 HM is also not GF-5 certified even though their Zn and P level is the same with the GF-5 version.
THe question is whether it is really does matter of GF-5 and SN-RC between brand to choose oil if it is used on standard OCI ? Or we should look into other standard that is more indicative of the oil robustness for turbo or extended drain ?