Mileage with the 5.4 V8's????

[mjstef]

Anyone running them??? I have an 05 Expedition 4X4 with 52K miles a 5.4 3V V8, 4 spd auto and 3.73 gears. I get 11-12 mpg in town and a very consistent 18 on the highway. The town mileage sucks because of the Tq Converter lockup from what i can figure. My dad has an 07 2WD with 20K miles a 5.4 3V V8, 6 spd auto and 3.31 gears. He gets 14-15 mpg in town and his last trip to Orlando from North of Gainesville netted him 23.2 mpg!!! I figure if i had the 6 sp auto and the 3.31 gears in my 4x4 i could easilly see 20 mpg!! What kind of mileage are you seeing??? BTW, 70 mph seems to be where you start sucking gas so that is about top speed for me................

 

[IDIeselman]

My 97 5.4 4x4 xtd cab gets 16-18 empty and 12-14 towing. 203500 miles and the only thing that has ever been changed is the air filter and routine oil/filter changes. The wife's 07 super crew is getting 15-16 and I refuse to check it while towing.....it's not good

 

[freebird01]

My 97 5.4 4x4 xtd cab gets 16-18 empty and 12-14 towing. 203500 miles and the only thing that has ever been changed is the air filter and routine oil/filter changes. The wife's 07 super crew is getting 15-16 and I refuse to check it while towing.....it's not good

my 99 F150 ext cab 4x4 gets the same milage....15-17 unloaded depending on how i drive and 10-12 towing a 10k lb gvw trailer and my suzuki samurai

 

[tonkadoctor]

My '03 F150 4x4 got about the same with the 4.6 V8 in it.

11 - 12 city / 17 - 18 hwy.

 

[freebird01]

but towing with a 4.6 is like making love to an ugly fat woman....sure it will get you where your going...but your not going to enjoy the ride very much....

 

[RustyBolts]

We've got an '04 F-250 2WD with the 5.4L, 4R100 Transmission, and 3.73 Rear end. I've been driving it back and forth to college in Lima ever since my chebby started missing again. Anyhow, if I set the cruise on the speed limit for the whole trip, it'll get 15.9-16.2 consistently. If I push the speed limit by 5 MPH, it'll get 15-15.4 consistently.

On a couple trips to VA and NC going through the Mountains on I-77, the truck got 13.5 MPG at 70-75mph with the criuse set.