1800rpm is where most get the best mileage at. 2200rpm is a good shift spot. The mpg gauge is not accurate. For oil I use Mobil Delvac1 Full synthetic
__________________
06 2500 Patriot Blue SBC, FLUX 3.3's, FLOOR IT STG 3, Smarty(TNT_R), Fass, 5 Diprocal Optix Gauges, 110lbs Valve Springs, HTT Intercooler, Twins 62/71/13 over S-480 with Race cover DTT Intake Horn, 6" staxx, OPie's Coolant by-pass OHIO COAL ROLLERS