I have a Kawasaki FT730V on my zero turn. I mow 5 acres once a week. Fuel is 89 octane ethanol free, treated with seafoam. I was using Kawasaki 4 stroke ktech 10w-30 and switched to Kawasaki 4 stroke ktech 10w-40.
I'm noticing a increase in fuel consumption. Can I safely mix the two oils to...