Royal purple oil

Been looking into running the max cycle engine oil and was wondering if it's safe to run in my 08 450, it says it's JASO MA2, the amsoil that I run is JASO MA,

JASO MA2 is an updated revision of MA.  The oil is "safe" as far as clutch compatibility goes, but it's not the best you can do.  RP is not on my short list of oils I'd personally use. 

JASO MA2 is an updated revision of MA.  The oil is "safe" as far as clutch compatibility goes, but it's not the best you can do.  RP is not on my short list of oils I'd personally use. 

 

Which oils are on your short list? :D

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