OBS mpg

[skowpowerstroke54]

Well, just finished my tortureous test of mpg in my 96' f250. I ran only from the front tank and on the first tank i got 18 mpg even with no additives at all. On the second tank i put in a 16 ounce bottle of 2stroke oil and ended up with 18.7 mpg I mostly ran the truck back and forth to school where its 55 mph about 90 percent of the way and the rest is stop and go traffic. I have a bully dog 6pos tuner (junk) on the second tune, diy intake, 4 inch exhaust with a 3 inch dp. On average i usually get about 16 but i ran these last 2 tanks with a really light foot never getting over 2000 rpm (auto tranny).


I was wondering what the best you guys out there have ever gotten with your obs? And what other mods do you think i could do to the truck to get even better milleage?

[Dallas4x4]

I get around 22-20 with a light steady foot with the chip on stock.

[GM Duraturd]

The best I have gotten was 19.7 all highway. I normally get around 17 and dont baby it a whole lot, but also dont drive it like its a race car.

[alberta 7.3]

I pull off 16-18 MPG but I drive with the skinny pedal touching the oil filter.

[Tyler]

I can pinch out 20 if I keep my foot out of it. Normally I do get 17-19, I have a TC lock switch so I can keep RPM REAL low.

[Jarrod B]

i mostly do a 50/50 mix. so i have been seeing 14-16mpg with 70 being the fastest. and traffic. then i got up to 19.5ish on all hwy.

[ridiculously_necessary]

i rarely check mine as i run wvo. but the last few tanks have been on straight d2

first check 17 - normal driving - for me
second check 18.5 - lighter on the foot, some heavier stomps
on third now - taking it easy, staying near 55 to 65 max
all empty

i was looking at starting a thread on this as im officially checking mine.

i have 95 f250, 4x2, ext. cab, long bed, 285k, 4.10 gear

[tneibling]

When I first got mine it got 16-17.

Since I have put on the DIY intake, changed the lift pump, and done the fpr shim and now regularly run fuel additive 18 is what I get just runnin around here close. If there is any highway driving it goes up to 19-20.

About a month ago I made a 300 mile trip doin 60-65mph never exceeded 2200rpm and got a hand calculated 24.3 mpg.

I think one of the main things that gives me the mpg's is that mine has the 3.55's pullin 35" tires therefore she is pretty high geared.

[ridiculously_necessary]

id love soem 3.55's. i dont pull often but i figure when i do ill just tolerate it. or get a chip

[ricksstang]

I have a 95 Dually with 4.10 diff and @ 65 with cruse on I got a best of 19. Driving 75 - 80 I seem to get about 17 on the road and 14 - 15 around town driving back and forth to work.

Rick