about carbon build up
mr kilmer watch ur video said drive at least once per month 30min in highway prevent carbon build in the engine or fuel injector
when driving in D gear 70mph rpm in 2100 with eco on
2014 camry had 6 gears 1,2,3,4,5,6 36k miles now
should i change to gear in 5th rmp 2500 in 70mph with eco off
which one is better or doesnt matter?
ur super fan