10-30 vs 10-40 oil

[redReno_imp]

My CB1100 had Yamahalube 10w-40 from the dealership at 600 miles, and at 1100 miles I swapped it out with Castrol part synthetic 10w-40 (I wanted to do 10w-30 but it was cheaper to get a jug of 40).

I just swapped it again at 3300 miles (Castrol didn't give me any warm fuzzies and I couldn't wait to hit 4000) with Amsoil 10w-30. So far, having fresh oil in the bike has made it extra smooth, I wanna say maybe even smoother than when I first rode her home. I can't wait to see how well this Amsoil will hold up over the next few thousand miles.