i have an 03 trailblazer 400 and have converted it to premix but have heard i need to change the crankcase oil?,can anyone help me on this ?, i already eliminated the injection pump and cleaned the gas tank, but i have not ran it yet till i'm sure i have done what i need to. thanks.

 

My dad converted from injection to premix and the dealer didn't say anything about changing the crankcase oil. His was fine till he got rid of it a year or so later.