Hello,
I just picked up a '94 Yamaha xt350. The manual recomends 10w30 or 20w40 oil. 10w30 is a car oil and I've never heard of 20w40. I use 10w40 in my Goldwing and 20w50 in my Harley (both amsoil). I was thinking to go 10w40 because its a [censored] bike but then thought 20w50 because its aircooled. Any ideas? Thank you very much.
I just picked up a '94 Yamaha xt350. The manual recomends 10w30 or 20w40 oil. 10w30 is a car oil and I've never heard of 20w40. I use 10w40 in my Goldwing and 20w50 in my Harley (both amsoil). I was thinking to go 10w40 because its a [censored] bike but then thought 20w50 because its aircooled. Any ideas? Thank you very much.