6.0 MPG with lift and 37’s? - Page 2 - Ford Powerstroke Diesel Forum
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post #11 of 25 Old 08-22-2019, 03:32 PM Thread Starter
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Ok cool, price you pay when you have 37’s and 22’s I guess. Luckily diesel is almost same price as gas in Texas now. Anyone run Archoil products?
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post #12 of 25 Old 08-22-2019, 04:03 PM
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I will throw in my two bits.

First thing first if you have a engine with issues especially head gaskets leaking mileage suffers. That becomes worse exponentially with other issues on top of another.

I got 11 mpg from Los Angeles to Elk Grove with puffin heads and no tune.

Had engine gone throw added intercooler exhaust turbo fuel pump ECM FICM tuners and other mods to improve the engine performance. Miles per gallon went to 17-18mpg Highway. I do have a gearing advantage with 38” tires the engine lumbers along on the highway at 70mph. Forget rpm @ 70 mph but it’s a lot slower.

If my engine was stock tires would have dropped fuel mileage but I probably added about 150HP and efficiency is way up.
All around mpg is around 14mpg. I’d bet 7-10 puttin around town depending on speed traffic.

Most I ever saw was 21 mpg but I did it going up to mountains and best part of it was back down with gravity Free Bee. EGR delete won’t do anything for mileage.

A SCT Tuner w/ PHP custom tunes helped a lot. I have the Hypertech gizmo and speedo is spot on. I’ve calculated by hand a few times and at worst 1-2 mpg different then the Stork that adds it all up for panel display.


Bottom line if mpg is high on your list: get a Prius.
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post #13 of 25 Old 08-22-2019, 05:06 PM
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Quote:
Originally Posted by mhatlen View Post
Bottom line if mpg is high on your list: get a Prius.
What kinda mileage does a Prius get with 37's?
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post #14 of 25 Old 08-23-2019, 05:30 AM
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Quote:
Originally Posted by Ryan05KR View Post
Bought the truck with all the upgrades. 22-14 would not have been my choice but looks awesome. I drive a lot of highway miles and was just wondering if I could make some improvements. Archoil fuel additive work?
You do realize you are going to continue catching a hard time.

A fuel additive for MPGs when you are pushing custom wheels and oversized mud tires down the highway, sure, yea do that.

Make sure you swap out the air in your tires for nitrogen too, that will help.

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Quote:
Originally Posted by djmaguire View Post
So says the internet... ...and so it shall be.
Quote:
Originally Posted by G8orFord View Post
OK, thanks for the info. To show my ignorance, what is the problem with 3 nipples...
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post #15 of 25 Old 08-23-2019, 09:36 AM Thread Starter
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I was just seeing what others are getting out there

Last edited by Heavy_GD; 08-23-2019 at 09:53 AM.
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post #16 of 25 Old 08-23-2019, 09:55 AM
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Originally Posted by Ryan05KR View Post
I was just seeing what others are getting out there
Yes, you asked a question that has been debated in many threads, and some have posted actual results and improvements.

That said, maybe this is your first time on a forum so I will say that if you cant take a joke the internet may not be for you.

Also, as part of our rules, dont bypass the profanity filters just to antagonize.
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Quote:
Originally Posted by djmaguire View Post
So says the internet... ...and so it shall be.
Quote:
Originally Posted by G8orFord View Post
OK, thanks for the info. To show my ignorance, what is the problem with 3 nipples...

Last edited by Heavy_GD; 08-23-2019 at 09:59 AM.
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post #17 of 25 Old 08-23-2019, 01:56 PM
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Originally Posted by twood71 View Post
I get, crap I done forgot what I get?

well I know I get better at 60mph vs going 70mpg in my 6.0

I just did a trip in my 6.7 Monday to Nashville Tennessee to see Iron Maiden, got 18.2 there and back was 18.5. must been the wind in my back lol

Side note for Down Town Bridge arena Nashville Tennessee, not set up for SuperDutys'
Iron Maiden? In Nashville?? That's pretty remarkable...
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post #18 of 25 Old 08-26-2019, 05:40 PM
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My best on 35's is 18, usually around 13-15 in city during summer and 9-11 during winter (warming up). And also depends on how you push the throttle. I run a edge tune in mine last 6 years. Otherwise truck is mostly stock with 4 inch exhaust.
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post #19 of 25 Old 08-28-2019, 04:30 PM
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I have tunes from Quick Tunes, home of the loony tune, with 4" lift and 35/12.5/18's and I average 15 mpg. I'm no granny but I'm no teen either. I get on it here and there, do 70-80 on highway and a fair amt of city. Don't listen to the guys saying they get 17+ in a 6.0. They also have ocean front property in Nevada they'll sell you cheap
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post #20 of 25 Old 08-28-2019, 04:54 PM
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To kinda answer the additive question, use it for lubricity, water demulsification and cetane boost. I use Stanadyne, HSS Everday Diesel or OptiLube for the above reasons. These trucks are known for a lot of things, good MPG's ain't one of them. That said, I put a 4oz sample bottle of the HSS Everyday on the way home from UCC this spring and I got slightly better MPG than usual, was it the additive or straight shot on the interstate? I dunno
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