My mechanic is telling me that i should use royal purple motor oil if i change to synthetic. Have any of you used it? Any issues with the product? Thanks

 

check out " the oil journals" in the UTH forum, for more info.

 

yup, i have been using it for the past couple of years,
and been doing it myself with a fumoto valve.
i seemed to get more kick when i changed, but i changed to synthetic (royal purple) and to spugen at the same time- and i know i got some gains from the spugen- impossible to know whether the synthetic really did anything or not.

 

I use it, no you really can't tell the difference between it and regular oils but it is a great oil and i will continue to use it.