Air Filter effects mileage too.
I swapped back to the OEM paper filter and modified the air box cover. I do notice a considerbale drop in mileage per tank.
But cleaner oil is better for her anyways.
34 MPG, Wow that is quite good, almost too good to be true.
+1, Fill then divide mileage, filling will also approximate if the gauge is calibrated/reading properly. But you knew this
