im just wondering what people are getting out of a full tank. in my 95 5.9 gas motor 1500 im lucky to get 250-260 out of a tank. im hoping to be getting a 99 cummins 2500 this weekend. so im wondering what i should be expecting out of it.

 

im not to sure about a stock one but i think it should be around 500-600ish just for referance... i have a lot of mods and about 600hp, driving around town, w/my very heavy foot, i get about 350-400, and straight hwy miles are A LOT more,

 

wow! really!?!?! damn i would happy to get 350!!! hahahaha

 

What size tank do you have now? I know mine has a 34 gal. tank and get 5-600 easily.

 

In my 04 I get about 375-400 miles with a 1/4 of a tank left so I'm going to guess at 550 to 600 miles a tank.

 

I get 21+ miles to the gallon if I stay below 65, (so 550+ per tank) and can keep my lead foot from gunning it to pass - it's hard to do when there is still massive passing power at 80 mph. It's just too much fun to drive!

 

well im not sure how big the tank is in the 99 2500 cummins but my truck is a 26gallon i believe. would have thought since the cummins is the same size truck(QC/SB) they would have the same size tank

 

NOPE Diesel trucks have bigger fuel tanks

 

alrighty then. guess that explains it then.

 

I have an 05 lighty modded, 450-500 miles with 1/4 tank left. But I have kind of a heavy foot