[comptiger5000]

99% grill block on this would cook the tranny, so that's not an option. 50% is about the limit there. It'll definitely do better in the summer, but doing 60 on flat ground with no wind, it still gets about 19. I've seen 21 once, with the exact right hills, cruise at 59, and a slight tailwind. It was around 40*, so no A/C, but not cold enough to really kill the mpg. For mine, it really needs taller gearing, as a 360 doesn't need to turn 1750 rpm to do 60mph in this thing. Too bad the gear vendors OD units are so expensive, as that would drop my RPMs a lot (just under 1400 at 60, or about 1500 at 60 if I geared the axles a bit lower for better off-road crawling).