Hi,
there are a lot of discussion on this topic and I'm a bit lost. Sometimes it is said that if a GL5 is also rated as API-MT1, then it will be safe on yellow metals. My question: is the MT1 spec required for a GL5 oil to be safe for yellow metal?
I ask this because actually I use a GL5 lubricant (TransElf TRJ 75W80) which is only rated as being GL5 (as far as I know). However on the technical sheet, it is mentionned that it is appropriate to be used in manual transmission that uses brass synchronizer rings.
So is the MT1 spec required to be safe on yellow metals or not?
there are a lot of discussion on this topic and I'm a bit lost. Sometimes it is said that if a GL5 is also rated as API-MT1, then it will be safe on yellow metals. My question: is the MT1 spec required for a GL5 oil to be safe for yellow metal?
I ask this because actually I use a GL5 lubricant (TransElf TRJ 75W80) which is only rated as being GL5 (as far as I know). However on the technical sheet, it is mentionned that it is appropriate to be used in manual transmission that uses brass synchronizer rings.
So is the MT1 spec required to be safe on yellow metals or not?