I recently purchased a 2002 F-150 Super Crew 4X4 Truck with the FX4 Package and the Tritan V-8. It only had 15K miles on it so it was practically new. I love the looks, the ride, the handling, the comfort and all the interior room. The only thing I am unsatisified with is the GAS MILAGE! I have been averaging only about 11-13 MPG. Being a former Z-71 owner, I was expecting to get at least 16 - 18 MPG out of the ford (Since that is what I got in my Chevy Z-71, and it seemed to have way more power).

My question is, does anyone know if the FX-4 is geared different, or tuned different then a standard supercrew 4X4?

Also, any suggestions on the best / cheapest way to improve MPG on this truck would be greatly appreciated.

P.S. I have read through several prior posts, and I just wanted to say before hand that I am not looking for ANY tips on "how to drive" to improve gas milage. What I am looking for is suggestions on the best products I can purchase (such as Air Intake systems, Exhaust systems, Performance Chips etc.) that will give me the best bang for my buck in improving overall gas Milage.

Thanks for your help

 

i just installed diablo chip and mac air intake - runs great- in city i got 15.04, 16.09, and 16.99 first three tanks- we'll let ya know how mods work out!

 

Im new to this and went to the Diablo chip site and do not know which I need. How do you figure it out. I have a 2003 f-150 4.2 v-6. no mods as of yet but want to do a mac intake , headers, etc...

 

www.motorhaven.com
talk to ken payne-administrator

 

Something else to consider: keep up on tire pressures, use a 10W-30 or -40 SYNTHETIC oil and synthetic trans fluid, K&N cold air kit, Superchip or Diablo, Granatelli Mass Air Flow sensor; cat-back Flowmaster exhaust system and long tube headers get a little pricey for the return. Higher octane fuel doesn't get better mileage, just reduces the tendency to detonate ("knock") under a load. After that we just have to 'grin and bear it.' Good luck! Jim

 

I'm pretty sure that the FX-4 package only includes skid plates and heavy duty shocks. I don't think it's geared different.

I'm averaging 16 mpg on my new F-150 4x4 with the 4.2.

 

I have a 2000 f-150 super cab with 119000 miles on it. the best I have done is 16.5, but I'm usualy closer to 15. . I have used mobil one since 10,000 miles, but recently switched to castrol synthetic blend. No milage diference noted with the oil switch.

 

Thanks Guys. I think I am gonna start with dueling it out and adding flowmasters, then an air intake sytem, then possibly a chip.

Thanks for the replys.