| which is the anti-scuff additive to protect cams and lifters.  Motorcycle oils and diesel rated oils have increases levels of these additives and don't fall under the same API guidlines . Stay away from API rated oils such as SL and SM. Royal purple and Mobil1 oils have the newer API rating for their multi weight oils.  
"It's better to be dead and cool than alive and uncool"  Don Johnson in -Harley Davidson and the Marlboro Man "Yes, I know more then JWT. Someone has to be the top dog, and it just so happens it's me." Nixit 
 
  |