BlueOvalFitter
Thread starter
My son has a 2004 (new style) F150 Lariat, 5.4 3V engine. He is always complaining about his gas mileage. He states that his dash mileage indicator is always reading 13 mpg at best. The differential is a 3:55 LS. That probably plays a big role in the mileage.2015 f150 @Supercab 2 wheel drive 3.32 rear end I have been getting 22 to 24 mpgs with the driving I do and I have gotten 26 mpgs a few times driving 60 to 65 miles per hour on level highway . All Mpg calculations are by doing the math.
The 2018 F350 x cab 4X4 with the 6.2 gas engine is not so good in comparison considering it weighs close to 2,000 lbs more and usually pulls a 7,500 trailer. The wife says the with the dash readout gets between 9mpg and almost 14 Mpgs . [with its use.] The P/U has never been on a free way trip with out the trailer.
My cousin ordered his 2010 F150 Lariat, 5.4 3V engine, with a 3:08 LS differential. He's getting about 22 mpg highway. He only pulls a 16' aluminum bateau with a Mercury 50, sometimes.