I religously use redline injector cleaner. I use only premium. I've used lower grade with poorer feul economy. Above 4000 ft I will use 87 due anything higher is of no benefit due to the atmospheric conditions. Lastly, make sure your tire pressures are on point, and I actually go a few psi over, and then I did sythetics through out my whole car, diif, transfer case, tranny, et al. Power button always engaged, and lastly, drive with a even foot on the throttle. I make a point to flow, that help the most ....


I also installed the Morgan Tec, too, forgot to mention that as well. The improved air flow/performance can do as much to make your fuel economy bad as good.... throttle control you jedis