I have a 99 F 250 XLT, crewcab, 4x4 swb with CA 4 sp auto (w OD), the 5.4 L v-8 and 3.73 gears and love it. What a GREAT truck. Nicest I've ever owned. I'm getting about 10-12 MPG city and 15-16 hiway. I'm suffering from buyers remorse and wondering if I should have gotten the 4.30 gears (the only other optional gear ratio). I find that I'm in 2nd and 3rd gear most of the time when driving in town on small/moderate hills.

Anyone with a 4x4 and 4.30 gears with same engine care to share your milage experience with me? (I know driving habits are different, but I GOTTA KNOW, it's bugging me).

 

I traded in an Expedition 4 x 4 with a 5.4 because I was getting 10.2 mpg combined city/highway and towing a 5000 lb boat/trailer/family package I was getting around 6 mpg on the freeway. With the trailer on I was always in 3rd and rarely did the truck make it into overdrive. That meant I was stopping for gas every 200 miles.

With my new F350 PSD 4 x 4 with 4.10 and without the overdrive from US Gear I'm thinking of and a 38 gallon tank instead of 32 in the Expedition, I'm covering 450 plus with ease.

My (leadfoot) wife drives a 4 x 2 Expedition with a Superchip and that truck hangs onto overdrive and therefore mileage improves considerably on the highway at 70. Maybe 300 miles to the tank. However, around town, the truck is like a racecar and she love to prove it. I figure that she has 290 horses and blows the doors off the new Navigator 4 x 4 my neighbor has.Considerably less weight and only 10 horses less than he. Man, is he upset!

My buddy has the V10 in an F250SD 4 x 4 and gets 6 mpg towing my trailer. The ohc motors are gas hogs.

I'm a Powerstroke convert.

 

 

I would say that is pretty decent mileage considering.

 

holy old thread Batman!

 

Too funny. I was wondering on that with the buyers remorse on gearing on a 14 year old truck...

 

Just picked up my 99 F550. 4.88 gears. No remorse. empty it gives me 15MPG at 70 on the highway. 50 gal tank 700 mileb range

 

Very nice! Great mileage there. I'm happy with 14 hw on my 99F250 with 4.10 gearing.