For my application ... 2017 Audi S6 (twin turbo V8, Stage 1)... VW spec 502.00 ... OEM uses Castrol Edge Professional 5w-40 (Dealership only). I have always switched over to Amsoil products after Factory warranties run out ... The Amsoil site shows 3 oils for my application SAE 5w-40 MS (no manufacture approval) $12.60/qt and SAE 5w-40 FS (it has manufacture approval) $9.45/qt ... Apparently there is no Signature Series oil for my application ...
It would seem obvious that the FS designation is the correct oil (and it costs less) ... I cannot find any other way to determine which to go with ...??
Does the higher cost of the MS designation give me more additives ...? and thus better protection ...??
Comments please ...
I change the oil every 10 Kmiles and oil filters every 5 Kmiles ...
It would seem obvious that the FS designation is the correct oil (and it costs less) ... I cannot find any other way to determine which to go with ...??
Does the higher cost of the MS designation give me more additives ...? and thus better protection ...??
Comments please ...
I change the oil every 10 Kmiles and oil filters every 5 Kmiles ...