Oil comparison in the Super Ten , i changed the factory oil at 700 miles and put Yamalube 10/40 synthetic , then at 5,000 miles i put Amsoil 10/30 ,today at 10,000 miles i put Shell Rotella T6 an ran her 150 miles . I noticed No difference between the Yamalube,Amsoil, or the Rotella in the ST...