When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Just returned Round trip from Bakersfield to Sacramento and San Jose last weekend. For the 750 miles total, I hand Calc. 19.1 MPG. running about 75 average, turning 1,600 RPM in Overdrive + the Gear Vendor Overdrive.
If I start crusing @ 80 or 85 the milage really takes a dump.
I also noted that @ 75 MPH, 1,600 RPM on flat ground(I-5), empty truck (except for 100 gallons of diesel at the start and about 300 lbs. of tools, I was running 5 PSI of boost and 650F on the TITemp., and 140 on the transmission temp..