My oil pressure is better when I premix my gas (stock OMP in place) and I'm not really sure why. Does anyone know? Without premix, the oil pressure is by no means bad. At idle, it's dead on 30psi, but when I am running 2-stroke in my gas, it'll sit a little above 30psi. It's also slightly higher when I'm driving versus no mix.

 

Makes no sense. Probably a coincidence. Checked to see of the wire to the oil pressure sender is loose?

 

Aaron is right, the 2-stroke oil would have no affect on the pressure of the oil system, since it would have no way of knowing you are premixing.