Slowmover

Diesel_Dave on another forum has recently been tracking ambient air temps against fuel mileage over [80] days of work commutes (Indiana; within frost season). The relationship of air temp against mpg tracks, up or down:1-C = 1% changeHotter equals better.I thought it would level out at around 90F, but a gasser chart shows it climbing still at 105F (north Texas summer). For purposes of mpg it appears that there is no downside to heat. Now, under load and with elevation changes things might not be as clear.

Heard about this. Am pleased it is on this forum (a good reason to join). Definitely on my list.