I drive a 2000 Dodge Ram Quad Cab 4X4 with the Off-Road package. Auto transmission and 4:10 gears with the 5.9. It will average 14 miles a gallon and I don't baby it any, It will get 16 highway running 75 to 80. It aint great mileage but for a full size 4X4 with 33X12.50/16 tires it isn't all that bad either.
It runs fine on 87 octane and never clatters or pings. I have 155,000 miles on it and it is still running strong.
Drop
