Re: what brand oil
 

Pennzoil Synthetic blend for me.

On the ethanol subject, I recommend the StarBrite Startron fuel additive. It's advertised as the best solution out there to address the water problems with E-10. I've gone through maybe 150 gals of fuel and the fuel-water separator has yet to trap any water. (It's the kind with the clear bowl at the bottom.

FWIW...YMMV