What are royal purple users saying?
I changed the oil to RP …and put on 2,000 or so miles …and can tell you the difference between the Harley-Davidson Syn3 and RP was …read moreDave Engelman
New Jersey*Results vary. Customer comments are not meant as product performance claims.
New Jersey*Results vary. Customer comments are not meant as product performance claims.
I changed the oil to RP …and put on 2,000 or so miles …and can tell you the difference between the Harley-Davidson Syn3 and RP was …drastic.
The bike shifts incredibly well and the oil temp dropped 20 degrees … and the fans come on 50 percent less oftenDave Engelman
New Jersey*Results vary. Customer comments are not meant as product performance claims.





