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Jun 27, 2006 | 03:48 PM

raven412

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Mpg

Hello
what kind of milage should I expect from my 93 F250 7.3 turo
4x4 5 speed man. 4.11 gears
Thanks

Jun 27, 2006 | 08:46 PM

F250FarmBoy

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From: North-Eastern, Ohio

Well, my '89 F350 (see signature) gets bout 10 towing and 15 empty. You should see somethin around that according to the gear ratio you have. hope that helps.

Jun 27, 2006 | 09:32 PM

seanvicious

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my 1990 7.3L 4x4 f-250 has the e4OD and 4.10 gears. i see 19mpg on the highway when i set the cruise at 70mph. if i drive it hard around town or in stop and go traffic, i see 14 or 15.

Jun 28, 2006 | 08:04 AM

raven412

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Mpg

Thanks for the reply

Im avg. 12 and it seemed low my 2001 avg. 21 on the hwy Im not expecting to get that out of this truck but time to start looking at what could be causing the poor mileage

Jun 28, 2006 | 10:25 AM

Hamberger

Fleet Mechanic

Joined: Sep 2005

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From: Ladner, British Columbia

My 93' F250 Factory Turbo with the ZF5 and 3:55 axle gets about 19.5 mpg with the K&N upgrade.

Check/replace your air filter with a K&N Filter and replace the factory air inlet duct with a 4" diameter fresh air intake. That will help your milage considerably (as much as 10% better)

A dirty OEM paper air filter can really affects milage.

Check you turbo for boost. At 62 mph, level road, no load, you should be getting about 3.0 psig of boost. If you don't have boost it will affect your milage.

Jun 29, 2006 | 08:45 AM

raven412

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Mpg

I have a K/N air system on the truck and clean reg.
But not shure I understand what your talking about
with turbo boost. Can you explain further?
Thanks

Jun 29, 2006 | 09:10 AM

Hamberger

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Joined: Sep 2005

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From: Ladner, British Columbia

Put a pressure gauge on outlet of the turbo and check your boost pressure.

On a level road, sea-level, no load, and going about 62 mph your turbo should put out about 3.0 - 3.5 psig of pressure.

The easiest place I know of to connect a pressure gauge is to use the supply line from the turbo discharge to the turbo waste gate.

If your turbo is not producing boost that will seriously affect your milage.
Seb...