We are The Fuel Mileage Doctors

Experts at Saving You Fuel, Time, and Money

Shop our listings by clicking on one of the product categories below!

gas fuel pump savings

Fuel Mileage Tuners

Increase Fuel Mileage for Big Rigs, Heavy Duty Trucks, and Pickups by using our Bully Dog tuning products.

Turbo charger boost


Turbocharge your vehicles for the best towing power on the roads. Our products are of the highest quality, built to last!

Exhaust manifold available


Increase engine power by upgrading your exhaust system. Let your engine breathe better.

Complete fuel mileage savings package

Complete Packages

The Complete Overhaul. Big Rig Fuel Mileage Tuner, Turbo, and Exhaust combo packages to increase fuel mileage




borgwarner turbo logo
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Fuel Mileage Doctor New Logo Primary

Kevin (the owner of Fuel Mileage Doctor) started out as a mechanic 35 yrs ago. He worked with small fleets and was a service manager for a 250 truck fleet 10 years ago in charge of tracking MPG. He also worked at an OEM engine manufacturer as his latest career before starting Fuel Mileage Dr.

FMD is a mobile business, we come to you – or will ship to you. We have parts in stock on road service vehicles in – McAlisterville, Pa. If you purchase any of our products from us, we offer a FREE complimentary installation if you are anywhere in Pennsylvania or close enough for us to drive to. If you're not within driving distance, you can still shop online and get what you need.

Kevin will gladly meet an owner or operator at a truck stop or anywhere in Pennsylvania to do an install of a tuner which takes only about 1 hr. We will come to fleets as well. Companies we work with want to save on fuel but are surprised at how much they actually do save. Kevin has the knowledge to help you out. We also have software to download engine ECM’s for current fuel mileage but the best way is miles vs. gallons.

Our History

Fuel Mileage Dr. and it's beginnning

Fuel Mileage Dr. has been a Bully Dog dealer since January 2013. Fuel Mileage Tracking has been part of the owner of Fuel Mileage Doctor's career the last 15yrs and he says "Selling Bully Dog MPG and Performance Products today only makes sense."

Bully Dog Tuners work on Cummins, Paccar, Detroit, and Cat. We see gains of 6 to 10% consistently and in Heavy Haul applications as high as 18%.

Our Products

Bully Dog - FMD - Logo

Fuel Mileage Boosting Parts and Tuners

We sell everything to increase your fuel mileage and to get more power from your truck. Be sure to check out our store to see everything!

In the Media

Dutch Valley Food Dristributors sees MPG Gains and Reduced Costs with Bully Dog - Movin' Out

Dutch Valley Food Distributors Installs Bully Dog With Fuel Mileage Doctor
"...After an initial consultation with Kevin (Fuel Mileage Doctor), Dave and James outfitted a couple of their trucks with Bully Dog Tuners as a test. Using the fuel economy tune, fuel economy results were immediate. On the low end, an increase of .2 mpg was achieved, however most units saw gains of .5 to over 1 mpg. Dutch Valley drivers were coming to Dave and James with a big smile on their face as they reported their fuel economy. Saving fuel puts money in everyone’s pocket as Dutch Valley has a profit sharing program for all of their employees...."
Read the full article...



White Oak Mills Makes Gains in Fuel Economy with Bully Dog (Fuel Mileage Dr.) - Movin' Out

White Oak Mills Transportation Installs Bully Dog With Fuel Mileage Doctor
"...White Oak Mills Transportation Manager Josh Long was searching for a solution when he spoke to his friend Charlie at Wolf Pack Transport. Charlie recommended that Josh try Bully Dog as the entire Wolf Pack fleet is equipped with Bully Dog. Bully Dog representative Kevin Campbell allowed Josh to try a unit on 2 tractors, and the results were an immediate 7/10 mpg gain. The White Oak Mills fleet is currently running 10 Bully Dog units, going from a 4.5 mpg to 5.2 average, including off-loading at high idle. They will save an estimated $50,000 in fuel costs this year and Josh is happy at finding a solution to his fuel economy dilemma..."
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Garden Spot Benefits from Bully Dog Engine Tunes - Movin' Out

Garden Spot Benefits from Bully Dog Engine Tunes
"...a distributor for Bully Dog engine tuners for the past year. The company is so impressed with the performance of Bully dog that they have even installed them in their own wreckers..."
Read the full article...


Past Projects

Our most recent fleet project - Wolfpak Transport LLC Wolfpak Transport Fleet completed by Fuel Mileage Dr


Why Use Us?

Other than our unbeatable prices and service...

Free shipping

Free Shipping!

on all orders over $250

When your order total is more than $250, rest assured you will be getting free shipping to anywhere in the United States.

Free Delivery

Free Installation!

with any tuners purchased though us

Want a Fuel Mileage Tuner to save tons of gas and money? If you're close, we will come out to you and install it for you and show you how it's used.

Shop Online with us

Shop Anytime!

day or night using our online shop

Our online shop is equipt with everything we sell and has up-to-date unbeatable prices. Order anytime, anywhere and we will ship your part out within 24 hours, Guaranteed.

High Quality Parts

Highest Quality!


We are so confident in our products and we know you will love them too. They are industrial, durrable and well-built. Everything you buy also comes with a warranty.

What are you waiting for?

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News & Events

Come see us at one of the following events!

Maple Grove Raceway Truck Show
Maple Grove Raceway Truck Show
Maple Grove Raceway Truck Show

Come visit us at the Maple Grove Raceway Truck show on July 21st 2018. Find the event at 30 Stauffer Park Ln, Mohnton, Pennsylvania. View more info on their Facebook page..

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Carlisle Truck Show
08/3/2018 - 08/5/2018

The Carlisle Truck Nationals and its show within the show, the Big Rig Show and Shine, are one of the largest and most action-packed truck events in the world. The weekend is a must-attend event and has been the epicenter for all things truck since 1991.

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Carlisle Truck Show
Carlisle Truck Show
Buck Truck Pulls
Buck Truck Pulls
Buck Truck Pulls, Lancaster PA

Buck Motorsports Park which began as a weekly tractor pull track in 1974, has evolved into a family friendly high horsepower motorsports entertainment facility offering a variety of events on Saturday nights from the end of April until the first week of October.

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Contact Us

Get in Touch with Us

Have a specific question or just want to say hi? Drop us a note here.

Ph: (717) 320-2259