I use the Rotella Syn in 2 v-4 Royal Stars, Yamaha & Polaris 4 wheelers,& my John Deere x 495 Diesel. This oil seems to work super, price @ Wallyword cant be beat. I think I paid 14.95 a gallon last fall when I bought 3 gallons. Even seemed to quiet down the whine. Hope it works in the Goldwing if I switch. Yamaha, I'm going to the Mpls bike show Saturday morning,hope I see a Venturized Stratoliner to keep me faithful!!!!!!!!!!!!.Jeff.