6.2 fuel mileage been awhile since my 5.4

[Muddedprairie]

Hello guys i traded in my beloved 06-F150 worked/loaded to the max for a 2011 F250 Last year and i tow with it i get 9.0 - 11.0 loaded or not i have a K&N filter (holes in airbox) have a MBRP exhaust on it.. running 285/75/18 toyo's on it... what can i do to better my mpg?

[biz4two]

For these 6.2L engines...if you go with an air filter mod...and larger exhaust, then you just about have to go with a tuner.

Especially...if the exhaust reduces the back pressure...because the 6.2L needs a certain amount of back pressure to run properly.

Look into a tuner...like 5 star...right here on FTE.

Good luck...


biz

[Snowman 8]

Originally Posted by Muddedprairie

Hello guys i traded in my beloved 06-F150 worked/loaded to the max for a 2011 F250 Last year and i tow with it i get 9.0 - 11.0 loaded or not i have a K&N filter (holes in airbox) have a MBRP exhaust on it.. running 285/75/18 toyo's on it... what can i do to better my mpg?

Be glad your getting that! I pull a skid steer and get 5-6mpg and when empty I get 10-11. Our company has 4 of these engines and they all get the same mileage. This is about half of what my old 6.0 diesel got but that also spent a few weeks a year in the shop!

[Krewat]

Chuckle... I've been getting 13.5 in my Taurus

[Slowpoke Slim]

I've got less than 800 miles on my '12 F250 6.2. I've gotten as high as 14 mpg on highway at 60 mph, and as low as 10 mpg in city driving with the 4wd engaged in snow conditions. This is all unloaded mileage.

The harder I put my foot into the gas pedal, the lower I can make the mileage go...

[6.2gasser]

I have 3400 miles on mine and the lie-o-meter says I got 16mpg unloaded on a 100 mile trip with some minor hills (best so far). On the flip side I've towed a 6K trailer 250 miles from sea level to 7000 feet and the lie-o-meter displayed 10.4mpg. Around town unloaded I get anywhere from 11-13mpg, all depends on if I want to here the rumble of the exhaust or not.

[bikerman2299]

I towed the setup in my signature from NC to CA and got 10 all the way regardless of where I was, with one minor exception, crossing the Rockies. That trailer was overloaded at 4k(I only know because the army requires weights when moving). And another 1k pounds in the bed. Unloaded, I got 12 while in Northern CA at about 3k feet. I've got an AFE Stage 2 intake, and a catback Flowmaster exhaust.

[JohnnyThunder]

Just came back from a 900 mile trip to Calgary and back at abt 70 mph. Averaged 14mpg empty with just the wife and our grand daughter. This was in sub zero weather so I am quite happy with that. I am hoping for 9 towing our 34 1/2 ft travel trailer this summer as that is a major upgrade from the 5.5 to 7.5 I got with our 08 Dodge 2500 Megacab 4x4 hemi.

[ruschejj]

How can you improve rolling horsepower/torque? I'm using the 6.2 gasser, not the truck in my sig.

I just towed my work trailer 2000 miles, it's a v-nose 18' trailer weighing about 10k loaded.

I use manual shift mode to keep the motor from shifting all the time.

Running 70 mph, I could not maintain speed in 6th gear on level ground. 100% throttle would only get me about 65mph.

In 5th gear, I could go 70 on flat ground at 2,000 rpm but any hill or wind would cause me to slow down, so, I had to shift to 4th on every hill to maintain 70mph. Some longer hills would drop my speed below 60 so I then had to run the hill in 3rd gear at 4-5000 rpm.

This drives me batty. How can I get better power so I can run a hill in 5th gear and keep my speed above 65mph? My max speed on level ground in 5th gear was only about 74, that's all it would do.....

[Snowman 8]

Why are you using the manual mode? Transmitions are ment to up shift and downshift so let it do its job. I pull heavier trailers than you are talking about without any problems, I just run the trans in D and lock it out of 5th because if it does shift into 6th the truck doesn't have enough power to hold any speed. It wasn't that long ago that we didn't even have 5th or 6th gear to choose from, just because a truck can't hold a higher gear doesn't mean there is something wrong with it. Be carefull not to over heat your trans by locking it into to high of a gear and lugging it so hard that it can't hold a speed.

[Framy]

I've got a 2012 F-250 6.2 motor with 4:30 gears. Empty I get 14-16 in the summer and in the winter its down 1 or 2 mpg on average. I pull a 5th wheel that when loaded weighs out at 13,000lb. Pulling that I get mostly between 7-8mpg. When in hills I go to manual as I can anticipate hills sooner than the auto can, and downshift to maintain rpm. I tried the SCT tuner and was disappointed with the results. If your looking for a truck that seems to have more pep, than the tuner might be ok. I was looking for better mileage and when pulling realized no increase in mileage. Running empty maybe a little, but not enough to warrant the $300 plus dollars of the tuner. I put on 4,000 miles with the tuner, so thought I gave it a honest try. I've gone back to stock and like that better for shifting points. When I had the tuner I ran it in the tow mode all the time.

[ruschejj]

Ok, I'm not going to listen to a motor scream at 4500 rpm for 30 hours/week. I'm asking if anyone has any helpful ideas on how to avoid that.

[2000silverbullet]

That's the difference with the gas/diesel engines. You're used to havin' all that torque on the bottom end with the 6.7 where the gasser just doesn't compare (to the 6.7). Once you get those rpm's up, the power in the 6.2 picks up, where the diesels drops off... This is why someone who's towing heavy all the time may be better suited with a diesel (which I know you're well aware of). It's all a matter of preference.

If you want to do XXmph pulling 10k lbs with a gas truck up a hill, it's gotta scream, that's where all the power is....

I don't have a solid answer for your dilemma, sorry.

[JohnnyThunder]

What 2000silverbullet said and to add, these are not big blocks of years past. They need to rev to make power and thats all she wrote. You just need to look at the 6.2's power curve to realize you will not get the power you want down low without resorting to a supercharger and even then they are not as good as an oil burner. Last time I checked a Whipple charger would set you back over 7k so you might just as well have an oil burner as it works out about the same.

[ruschejj]

Thanks gents. Much obliged.