LCAM-01XA
Full Access Member
Actually WMO makes my fuel economy better - I see no more than 20mpg at 1700 rpms with straight diesel, however even a light 3:1 mix with WMO gets me up to 22mpg! That's 1700-1750 rpms constant, on mostly level roads, with or without cruise don't matter. My road speed is 52mph, as I have 4.10 rear gears.