Motor Flush
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Motor Medic Motor Flush

Part No. MF3 Warranty Details  
$3.51
was $4.69
you save $1.18
Quantity  Add to Cart
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 33 reviews)

Ratings Distribution

  • 5 Stars

     

    (25)

  • 4 Stars

     

    (6)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

96%

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)
    • Reviewer Profile:
    • Auto enthusiast (10), Casual driver (7), Mechanic (7), Truck enthusiast (6)
    • Was this a gift?:
    • No (5)

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 33 customers

Displaying reviews 1-10

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5.0

Great

By 

from undisclosed

Verified Buyer

Comments about Motor Medic Motor Flush:

Great

 
5.0

Clean up

By 

from undisclosed

Verified Buyer

Comments about Motor Medic Motor Flush:

Works very well been using this product since the 70s well recommend it

 
5.0

Yes, I would buy this product again

By 

from undisclosed

Verified Buyer

Comments about Motor Medic Motor Flush:

Used this many years and does a great job cleaning out the engine

 
5.0

i will buy this again

By 

from undisclosed

See all my reviews

Verified Buyer
3 or more reviews submitted

Comments about Motor Medic Motor Flush:

cleans good the duty inside the motor

(1 of 1 customers found this review helpful)

 
5.0

Great!

By 

from undisclosed

Verified Buyer

Comments about Motor Medic Motor Flush:

Great!

 
5.0

excellent

By 

from undisclosed

Verified Buyer

Comments about Motor Medic Motor Flush:

Good

(1 of 1 customers found this review helpful)

 
5.0

Fixed noisy lifters

By 

from Unionville, CT

Verified Buyer

Comments about Motor Medic Motor Flush:

Saw some users say this helped with noisy lifters. My 2004 Explorer was idling rough and the constant tick tick was getting louder. Used this and the oil came out jet black. Put new oil and filter on and no more ticking!

  • 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.

    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.

    16 Questions | 21 Answers
    Displaying questions 1-10Previous | Next »
    • Q:

      Can I use this in a mower/small engine?
      Asked on 6/30/2017 by kaod3 from Ohio

      1 answer

      • A:

        Yes you can use this in a small engine just do the math it will probably only take 6 to 8 oz.

        Answered on 6/30/2017 by john-annette from undisclosed
    • 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
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