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25% Off Online Orders of Select Parts and Accessories. Enter Promo Code FOUND25 in Cart

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25% Off All Online Orders of Select Parts and Accessories
Receive 25% Off Your Online Purchase. Use promotional code FOUND25 at checkout to receive discount. Not valid in combination with any other discounts or promotions. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Excludes the following categories: Tires, Wheels, Batteries, Powerstop Brake Kits, Oil, Antifreeze, Refrigerant, Truck Boxes, Vent Visors, Bug Shields and BRANDS: Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Thule, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, JVC, MSD and BBK Performance. Valid online until 2:59 am EST on 2/27/17. Online orders scheduled for in-store pick up must be completed by closing on 2/26/17 for discount to apply.

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  • Part #: MF3|
  • SKU: 8385297

Available today

Pay in Store Available

    • Removes accumulated gums, varnishes and sludge from internal engine parts
    • Releases sticky valves & piston rings, allowing oil to circulate freely to all parts of the motor
PayPal available for online purchases. Major credit cards accepted online and in store. Pay online, in-store or take advantage of our Pep Boys credit card. Learn more and see additional details in cart.

MOTOR MEDIC 5 Minute Motor Flush

Cleans engines in 5 minutes. Frees up sludge associated with slow city driving. IMPORTANT. MOTOR MEDIC Motor Flush is not recommended for Turbo Charged engines, when the Turbo Charger is lubricated by the engine oil. For those applications use MOTOR MEDIC Synthetic Motor Flush for Turbo Charged Gas and Diesel Engines (MFD1).
  • Removes accumulated gums, varnishes and sludge from internal engine parts
  • Releases sticky valves & piston rings, allowing oil to circulate freely to all parts of the motor
  • This item must be picked up in the store as it may contain materials which are flammable or corrosive.



Rated 4.6 out of 5 by 7 reviewers.
Rated 5 out of 5 by Flush it, flush it real good! 156,000 miles on my Ford. That's a LOT of oil changes. I flush in between each oil change. Nuff said. October 29, 2015
Rated 5 out of 5 by Great "Pre Oil Change" product I have been using Motor Medic flush for all my cars for years. I actually run the car(s) at idle for 15 to 20 minutes and then change the oil. It's great to get the insides of the engine free of "junk" and sludge, especially for high mileage vehicles. September 17, 2015
Rated 4 out of 5 by good Breaks down to much January 31, 2015
Rated 3 out of 5 by It serves in 'helping to clean up a bit' the engine It have to be run for quite some time ("CON"- UNLIKE some other products - You cannot drive the vehicle, while using it ... December 21, 2014
Rated 5 out of 5 by EXCELLENT PRODUCT EXCELLENT PRODUCT October 25, 2014
Rated 5 out of 5 by excellent product i always used it every time i change my cars oil September 5, 2014
Rated 5 out of 5 by Excellent Product I have used Gunk Motor Flush since the 70's. Various motors and types, cars vans trucks and boats. Every motor has recovered from noisy, rough running and bad milage. My latest "Gunk Motor Flush" recovered a Mazda, CX-7, VVT actuator from making noise during the first 3 seconds after start up. Taking the vehicle to the dealer showed a $1,100-1,200.00 repair bill staring her in the face and a very complicated proceedure to make it all better. 5 minutes, an oil change and the cost of this product took the noise away, which by the way was nothing more than a dirty sludge build up around the VVT actuator. She is now having a noise free start up and increased mileage too boot! Great Product Too bad Dealers Don't want you to know about this product. I will continue to buy it long into my future. Stan Hurst Texas December 10, 2012
  • 2017-01-22 T15:13:30.106-06:00
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