Originally Posted by Mr. Carts
I just picked up a IT465 and have a oil question.
What oil are you using with for your 40 to 1 premix?
My IT465 manual says Yamaha R at 16 to 1.
I seem to be doing fine running Amsoil Dominator mixed 40:1 and sometime 50:1 .
The shop down the street from me has it so I mainly use it out of convenience.
I'll let the others chime in with their opinions.