im using reg 87 and i have the 5 speed auto...i got the overdrive on. i thought this new 5 speed was suppose to get better mileage. my 01 5.4 was better.

 

My truck does about 14mpg stop & go, 15 - 16 average, and 18.2 - 19 highway. These specs are based on easy driving and usually 5mph over the limit.

Your also going through the engine break in period.

Also from your above post, your trannys a 6spd

 

its the auto which is the 5 speed right?? it only has 1200 miles on it. i bought it with 75 miles. the salesman said to go between 55-65 on highway trips. he said dont set it on cruise keep it 55 for 10 miles than 60 for another 10 etc...

 

i believe 09 come standard with a 6 speed auto.

 

getting 15 miles in town and 19 on the highway average have 22 inch wheels before I added wheels I was getting better mileage.

 

I believe the 5.4 does, yes. The low end trucks still use the 4 speed. The high fuel economy (SFE) is a 2wd screw with a 4.6 3V and the 6 speed and a 3.15 axle.

 

well 11.2 is the avaerage mpg so..id say its 50/50 highway and city driving a week for.. plus someone mentioned the motor isnt broken in yet.

 

Your not driving in 4wheel driver are you. Wow only 11 on the hwy, does yours have the digital message center, if so once you get up to crusing hit the reset button and it should recalculate the mpg for hwy, if your only getting 11 somthings wrong. There should not be a break in period were your mpg will be that bad and then go way up. I bought my 08 lariat brand new, had 0 miles on it and first time i took it on hwy i was getting 21 and that was completly stock.

 

i was fooling with the message center thing and it was getting 11.4 mpg average yesterday. i can get it to show just the highway mileage? im i 2wd bed empty.

 

so basically your not calculating it out yourself? i'd try that next time and see what you get.

 

intake will make the engine breath sooo much better. better mileage and better throttle response. love the sucking sound if it too hah

 

What im talking about is when you get up on the hwy for more then 5 mins and once your cruzing at speed like 65 get the message center to show mpg, then hit reset it should jump up real high then down to were what you are getting while driving. If you are doing this and it keeps going back down to 11 mpg you ahve something wrong. I have a too box on back as well and getting 21 on hwy doing 70. If you cant get your message center to show more then 11 mpm on hwy somethings wrong with truck or the message center is not calibrating.

 

Yea , that's terrible. I averaged 16 mpg @ 76-79 mph 2200 rpm. If I could only do 65 :o - 343 miles to work, one way last year lol. Still had almost a 1/4 tank left, but I have the 3 door SuperCab.

 

ok got 19.5 mpg highway today on my 100 mile round trip to work .i didnt do the reset right the first time. i guess will call this one operator error

 

From Miami to Boca Raton and back, 2000 5.4 Lariat, 3.55 rear end, 2wd, with Magnaflow and a K&N element. I got 19.0. Kept it at 60-65. 130 miles, with about 10 miles of traffic lights, and a couple of miles of stop and go because of a wreck on I-95. I am very pleased.