Motor Flush
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Motor Medic Motor Flush

Part No. MF3 Warranty Details  
Motor Medic Motor Flush is a high mileage engine additive and cleaner from the makers of Gunk that cleans engines in just 5 minutes. Use Motor Flush before each oil change to help keep your care running smoothly.

Product Features:
  • Removes accumulated gums, varnishes, and sludge from internal engine parts
  • Releases sticky valves and piston rings, allowing oil to circulate freely to all parts of the motor
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Base Stock:Solvent
Container/Package Size:32 oz
Container/Package Type:Plastic Bottle
Diesel Compatible:No
Intended Treatment Result:Frees Valves and Rings
Oil Quantity Treated:4 qt
Recommended Interval:3500 mi
Stops Leaks:No
Synthetic Compatible:Yes

REVIEW SNAPSHOT®

by PowerReviews
Motor MedicMotor Flush
 
4.7

(based on 22 reviews)

Ratings Distribution

  • 5 Stars

     

    (18)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

95%

of respondents would recommend this to a friend.

Pros

  • Effectively removes dirt & grime (16)
  • Easy to use (15)
  • Safe to use (8)
  • Protects finish (3)

Cons

No Cons

Best Uses

  • Anywhere-anytime (7)
    • Was this a gift?:
    • No (3)
    • Reviewer Profile:
    • Auto enthusiast (10), Casual driver (7), Mechanic (7), Truck enthusiast (6)

Most Liked Positive Review

 

Seems to work as promised - proof?

It seems to work - the engine has never had any internal work, but a peek inside the valve cover through the filler hole reveals no gunk or grime at all, squeaky clean....Read complete review

It seems to work - the engine has never had any internal work, but a peek inside the valve cover through the filler hole reveals no gunk or grime at all, squeaky clean. I add a quart of Gunk before every oil change, run it for at least 5 minutes, no more than 10 minutes, and then drain it thoroughly. It drains faster because it thins the oil, and they say to be careful on high mileage cars since it could loosen up large deposits all at once. I've used it since the car was new in 1989, and it now has just under 600,000 miles on it. I'd say it's working, though luck and other factors certainly play a role.

VS

Most Liked Negative Review

 

Flushed away

Simple to use, definitely does flush the bad stuff.

Simple to use, definitely does flush the bad stuff.

Reviewed by 22 customers

Displaying reviews 1-10

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(0 of 1 customers found this review helpful)

 
3.0

Works if gunk isnt thick

By 

from florida

Verified Buyer

Comments about Motor Medic Motor Flush:

Works if gunk isnt thick

  • Was this a gift?:
  • No
 
3.0

Flushed away

By 

from Irving,Tx

Verified Buyer

Comments about Motor Medic Motor Flush:

Simple to use, definitely does flush the bad stuff.

  • Was this a gift?:
  • No

(1 of 1 customers found this review helpful)

 
5.0

must for high mileage engines

By 

from NY

Verified Buyer

Comments about Motor Medic Motor Flush:

this is great cleaner for high mileage engines, it cleanes existing sludge, gunk, gummy residues in the engine.
i tried this in 98 toyota camry engine with 200,000 miles. oil was golden color, after adding this, ran engine for five minutes, turn off, and then drain immediately. it came out completely black and with lots of residue in it.

do not use this on a hot engine, must be used on cold engine, and you must drain immediately. this dissolves sludge/gum in your engine which settles after a while, so if you leave it in your engine too long, may cause internal damage.

do not drive your car with this in your oil.

the liquid cleaner in the bottle is red colored and has a slight kerosene with a hint of diesel oil smell, don't know what the actual ingredients are.

If you are planning on switching from dino oil to synthetic you must use this atleast once before switching.

  • Was this a gift?:
  • No
 
5.0

Works well

By 

from Cincinnati,Oh

See all my reviews

Verified Buyer
3 or more reviews submitted

Comments about Motor Medic Motor Flush:

Good product easy to use

 
5.0

If this doesn't clean your motor I dunno what will.

By 

from Rochester, NY

About Me Mechanic

Verified Buyer

Pros

  • Effectively Removes Dirt & Grime
  • Great Stuff

Cons

  • None

Best Uses

    Comments about Motor Medic Motor Flush:

    The flushed oil and chemical had the appearance and consistency of dark karo syrup. I'm confident does a great cleaning job inside our motors.

     
    5.0

    works great

    By 

    from rock hill sc

    About Me Auto Enthusiast, Mechanic

    Verified Buyer

    Pros

    • Easy To Use
    • Effectively Removes Dirt & Grime

    Cons

    • No Cons

    Best Uses

    • Cleans Engine

    Comments about Motor Medic Motor Flush:

    i used this flush in all my cars

    (1 of 1 customers found this review helpful)

     
    4.0

    Great stuff, used for every oil change

    By 

    from IL

    About Me Auto Enthusiast

    See all my reviews

    Verified Buyer
    3 or more reviews submitted

    Pros

    • Easy To Use
    • Effectively Removes Dirt & Grime

    Cons

    • None

    Best Uses

    • Anywhere-Anytime

    Comments about Motor Medic Motor Flush:

    Awesome product that is used in every oil change especially for new "used" purchases. Cleans engine to my satisfaction. I have had to rebuild one (1) engine due to a broken cam and the engine was immaculate with no signs of sludge or massive buildup. I started using it when it was known as "GUNK" motor flush and could not find it for a while until it showed up as under the Motor Medic brand. I thought the item went out like other items due to regulatory issues, but glad to see it is still available.

    (2 of 2 customers found this review helpful)

     
    5.0

    recommended

    By 

    from herndon, va

    About Me Casual Driver

    See all my reviews

    3 or more reviews submitted

    Pros

    • Easy To Use
    • Effectively Removes Dirt & Grime
    • Protects Finish
    • Safe To Use

    Cons

      Best Uses

        Comments about Motor Medic Motor Flush:

        always use this product, before oil change run the engine idle 5 to 10 mins, wait for 15 mins to cool down the engine and oil for oil change.

        (6 of 6 customers found this review helpful)

         
        5.0

        ..It WORKS..!!!

        By 

        from Jacksonville nc

        About Me Auto Enthusiast

        See all my reviews

        Ask me a question

        3 or more reviews submitted

        Pros

        • Easy To Use
        • Effectively Removes Dirt & Grime
        • Safe To Use

        Cons

          Best Uses

          • Anywhere-Anytime

          Comments about Motor Medic Motor Flush:

          Developed a loud, annoying "Tick" on my 1994 Mercury Capri 1.6L with 283,000 miles that I've been driving for 9yrs,78 miles a day to work. Used this product and the annoying "Tick" disappeared, that was 11,000 miles ago and now with 294,000 miles still no "Tick"..great product..

          (9 of 19 customers found this review helpful)

           
          5.0

          Good Stuff

          By 

          from Jacksonville nc

          About Me Auto Enthusiast

          See all my reviews

          Ask me a question

          3 or more reviews submitted

          Pros

          • Easy To Use
          • Effectively Removes Dirt & Grime
          • Safe To Use

          Cons

            Best Uses

            • Anywhere-Anytime

            Comments about Motor Medic Motor Flush:

            ...had a sticky lifter, used this stuff..no more sticky lifter...

            Displaying reviews 1-10

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            Do you have questions about this product?

             

            Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

            15 Questions | 20 Answers
            Displaying questions 1-10Previous | Next »
            • Q:

              Can I use this on a Volvo C70 ?
              Asked on 7/9/2016 by Dee

              1 answer

              • CUSTOMER CARE

                A:

                Hi Dee, I'm glad to assist you! THis Motor Medic Motor Flush - Part No. MF3 is not specifically made for your vehicle. This is the perfect solution for improved performance for any non-turbo gasoline engine. If you have a diesel or turbo charged engine, use Motor Medic's Synthetic Motor Flush.

                Answered on 7/11/2016 by Solomon from AAP
            • Q:

              I have Toyota corolla with about 158000 miles on is it safe to use this
              Asked on 10/4/2014 by old man from bethpage, ny

              1 answer

              • CUSTOMER CARE

                A:

                Yes Old Man, you should be able to use this high mileage motor flush in your Toyota corolla.

                Answered on 10/5/2014 by Steve from AAP
            • Q:

              It says to make sure oil level is at a safe level. And then it says to add Motor Flush. Should this be done without removing any oil first. In other words, won't my crankcase be over filled?
              Asked on 6/1/2014 by Eggs from Crown Point, IN

              1 answer

              • CUSTOMER CARE

                A:

                Hi Eggs, good question! Yes, the oil can be drained after the motor flush is used and your crackcase will not be overfilled. You can follow these directions while using this flush. Check that the engine oil is at a safe level of operation. Then add motor flush to a cold engine before changing the filter and oil. Idle engine at normal speed for 5 minutes. The motor flush will circulate throughout the entire lubricating system of your engine removing sludge, gums and varnishes from the engine and oil pan. It also frees the sticking valves and rings. Then drain oil and remove the oil filter. Finally replace the filter and drain plug and refill engine with new oil.

                Answered on 6/5/2014 by John the Car-Doc from AAP
            • Q:

              i have a f250 with a small rear main seal leak and i was wondering if this product could make that leak worse?
              Asked on 3/9/2014 by ace from Cocoa, FL

              1 answer

              • CUSTOMER CARE

                A:

                Hi Ace, happy to help! Motor flush is used for the removal of accumulated gums, varnishes and sludge from internal engine parts Circulated through the engine for 5 minutes before an oil change and especially before changing the oil filter, motor flush will free sticky valves and piston rings allowing oil to circulate freely to all parts of the motor Easy pour bottle 32 oz.

                Answered on 3/10/2014 by Steve from AAP
            • Q:

              how bad is it to not drop engine oil pan after using motor flush
              Asked on 1/5/2014 by marvelous from Belleville,MI

              1 answer

              • CUSTOMER CARE

                A:

                Hi marvelous! Glad to be of assistance. It depends on the engine condition, engines with 75,000 miles or excessive deposits, requires removing and cleaning of the oil pan to minimize the risk of engine damage.

                Answered on 1/10/2014 by John the Car-Doc from AAP
            • Q:

              should the motor already be warmed up or should it be cold when i put the motor flush in it?
              Asked on 10/13/2013 by kyle

              1 answer

              • CUSTOMER CARE

                A:

                Hi Kyle, the Motor Medic Motor Flush (Part No. MF3) directions are as follows: 1. Check to make certain oil in crankcase is up to safe level. 2. Add MOTORMEDIC Motor Flush to cold engine before changing oil and filter. Idle engine at normal speed for 5 minutes. DO NOT DRIVE THE VEHICLE. MOTORMEDIC Motor Flush will circulate throughout the entire lubricating system of your engine dissolving sludge, gums and varnishes from engine and oil pan. It also frees sticking valves and rings. 3. Drain crankcase and remove oil filter. Replace drain plug and install new oil filter. NOTE: On engines with 75,000 miles or excessive deposits, remove and clean the oil pan to minimize the risk of engine damage. 4. Refill crankcase with oil. NOTE: Extremely dirty engines may require repeat treatment. Follow directions 1 to 4.

                Answered on 10/14/2013 by Steve from AAP
            • Q:

              I managed to get water in my oil, drained it ready to add fresh & see what happens. Any hints on an additive that will eliminate the residual water. I know I'm a bonehead!
              Asked on 6/23/2012 by Bear

              1 answer

              • CUSTOMER CARE

                A:

                This Liquid Wrench High-Mileage 5-Minute Motor Flush - part# MF3 should work fine for your application as it works to remove sludge and varnish to free sticky valves, rings and drain passages. For any further assistance, please visit your nearest Advance Auto store or call us directly at 1-877-ADVANCE (238-2623) and one of our representatives there would be more than happy to assist you.

                Answered on 6/24/2012 by Vincent from AAP
            • Q:

              Would this help a low oil pressure situation?
              Asked on 5/4/2012 by Dan from Locust Grove, VA

              1 answer

              • CUSTOMER CARE

                A:

                I would not suggest you for the Liquid Wrench High-Mileage 5-Minute Motor Flush as this works to remove sludge and varnish to free sticky valves, rings and drain passages. You may have an issue with the drain valve in the oil filter housing, but it sounds most like a bad gerator pump (low pressure oil pump). However, I would suggest taking your vehicle to a certified mechanic for a proper diagnosis before buying and having parts installed that may not (solve/be) the problem.

                Answered on 5/9/2012 by Vincent from AAP
            • Q:

              my car has about 110k miles, and I got the car when it was about 90k miles. I normally use full synthetic oil. I was thinking about using one of these products right before oil change. I get mix feeling from the answers here.
              Basically I wanted to know if I put this product in my car, and drive to get oil change which is like 10 miles away; will it do any adverse effect to my car engine given that my car won't be in the idle state for about 10-15 mins?
              Also if my engine gets damaged by using this product, does the manufacturer pay for the new engine?
              thanks
              Asked on 3/23/2012 by Raleigh from Raleigh, NC

              1 answer

              • CUSTOMER CARE

                A:

                This Liquid Wrench High-Mileage 5-Minute Motor Flush with Part No. MF3 is safe to use in your 100K+ mile car. It is recommended to only run it for 5 minutes and then dump the oil and you have to do that in Idle and NOT when driving. When you are not draining the Gunk after use, it might create problems. So follow the instructions and use this Motor flush and you will see the difference. Sorry, the manufacturer will not pay for any of the losses occurred.

                Answered on 3/26/2012 by John the Car-Doc from AAP
            • Q:

              what happens if the car was driven with motor flush in it?
              Asked on 2/13/2012 by Anonymous

              1 answer

              • CUSTOMER CARE

                A:

                Any engine flush is based on diesel byproducts. If flush is left in the system, it will remove some gunk and soften anything remaining, BUT the oil will not be so effective as lubricant as it will be dissolved and on top of that all the dirt will be recirculated in the system.Now any additional additives in the flush could be reactive with some metals or can degrade any rubber parts or gaskets in the system.It is better to drain the engine from flush and old oil and if you are not happy with the result flush it one more time.

                Answered on 2/15/2012 by Vincent from AAP
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