Ive Got A 2000 Phazer Which Runs Amsoil And My Viper Is Running Yamalube Synthetic. Whats The Best Oil To Run In Both Of These?? The Phazer Seems To Run A Little Rich. I Have To Change The Plugs Often. Whats Your Suggestion????
For a power valved motor like you got in the viper you should run the amsoil
interceptor,on the PZ you could lean up the pump some and use
the same oil in both,,or yamalube in the PZ ....$.02
and yamalube is only a semi-synthetic,amsoil is full syn.