2678 miles: Royal Purple 5w30 during winter. Normal driving.
6500 miles: Amsoil Euro 5w40 AFL. Normal driving and mostly highway commuting. Was stuck in the middle of nowhere in Iowa and ran Amsoil Series 2000 octane booster. That made my oil shear down to a thick 30 weight.
6142 miles: Amsoil Euro 5w40 AFL. Autocross and spirited driving. Took car to redline most of the time during this change interval.
Currently using Royal Purple 5w40. Will post up my UOA in about 3 months.
6500 miles: Amsoil Euro 5w40 AFL. Normal driving and mostly highway commuting. Was stuck in the middle of nowhere in Iowa and ran Amsoil Series 2000 octane booster. That made my oil shear down to a thick 30 weight.
6142 miles: Amsoil Euro 5w40 AFL. Autocross and spirited driving. Took car to redline most of the time during this change interval.
Currently using Royal Purple 5w40. Will post up my UOA in about 3 months.