I have found with my 7060 and cutting, I'm using about 1-1.25 gal/hr. This is with a 6' cutter on the 3-point. The ROPS model has an 18 gallon tank. For you to use 13.5 gal in 5 hours, that's seems really excessive. Maybe the tank wasn't full when you started?
Also, you are correct in that ePTO reduces RPMs about 400 RPM when working at a 540 PTO speed. I like ePTO a lot.
Also, you are correct in that ePTO reduces RPMs about 400 RPM when working at a 540 PTO speed. I like ePTO a lot.