BTW, my truck is the offroad package with 4.10s. It gets about 10.8 around town.

 

Seems to me that about a year ago on Xtreme 4x4, Ian run thru a 96 Dodge p/u with crummy mileage and got good results by cleaning out the crap from the cab/bed. 300lbs worth. Air up the tires to spec. Use a vaccum gauge and drove like there was an egg between his foot and the throttle.

Now that said, my own truck the way I use it, is around 11mpg town and 15 maybe on the highway. I don't drive it that much either. Nothing to go thru $40 bucks worth of gas a night pushing sprint cars.
Run my diesel as a DD instead...about 18 to 22 mpg with it.

New spark plugs will be good, I just use the Champions or what ever Newfie Speed and Sport has on sale. My buddy put in E3's in his Dakota, was alot poorer and no increase in mileage.

sprntpshr

 

I don't even know what's wrong with my truck. I'm usually easy on my truck. I drive about 100 miles a day. I put 60 in it today and it went from about F to half. I'm getting like.. 7-9 mpg. It sucks.

 

I'm going to respond with the obligatory comment: check you plenum. Look at the top sticky on this forum for more info.

 

my 04 dodge ram 3.7 5 speed gets around 24-26 MPG my 03 4 door 5.9 auto gets around 7-10 MPG