Engine and Fuel Micro-Lubricant
Hover over the image to zoom in
Share this:

Z-Max Engine and Fuel Micro-Lubricant

Part No. 51-011 Warranty  
zMAX® engine and fuel micro-lubricant soaks into metal, reducing engine deposits for increased gas mileage, extended engine life and greater horsepower.

Product Features:
  • Works with all motor oils, gas and diesel fuel
  • Reduces friction and increases horsepower
  • Dissipates engine heat and helps improve or restore gas mileage and reduce emissions in older cars and helps maintain gas mileage and emissions in newer cars
  • Extends engine life by reducing engine deposits
  • Made in USA
Back To Top
Application Method:Pour Into Engine Oil and Fuel Tank
Engine Components Cleaned:Internal
Frees Sticking Hydraulic Lifters:Yes
Removes Sludge/Varnish:Yes

REVIEW SNAPSHOT®

by PowerReviews
Z-MaxEngine and Fuel Micro-Lubricant
 
4.5

(based on 30 reviews)

Ratings Distribution

  • 5 Stars

     

    (21)

  • 4 Stars

     

    (6)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (2)

90%

of respondents would recommend this to a friend.

Pros

  • Improves vehicle performance (22)
  • Runs clean (19)
  • Reduces wear (18)
  • Safe (17)

Cons

    Best Uses

    • Car (20)
    • Regular use (16)
    • Truck (16)
    • RV (6)
      • Reviewer Profile:
      • Auto enthusiast (12), Casual driver (5), Mechanic (5)
      • Reviewer Profile:
      • Auto enthusiast (8), Casual driver (5), Mechanic (5), Truck enthusiast (5)

    Most Liked Positive Review

     

    Seems to work

    I added zMax to my 2008 BMW 128i to see if it would quiet a noisy lifter and it did! This is a low mileage used car and with the BMW long intervals for...Read complete review

    I added zMax to my 2008 BMW 128i to see if it would quiet a noisy lifter and it did! This is a low mileage used car and with the BMW long intervals for oil changes, no telling how few oil changes this car has had. zMax seems to have done the trick and the slight tapping noise is now gone. The engine now purrs like it should. Gas mileage also improved significantly, but not sure if that is just temporary due to better driving habits. I'm adding xMax to my other cars to see if I get the same positive benefits. Not sure I'll continue at the recommended intervals due to the price, but do plan to continue to use periodically.

    VS

    Most Liked Negative Review

     

    "Too much whiz and not enough bang"

    Things that aren't so great about it include price, its a gimmick product, and the manufacturer can not prove it works. The manufacturer has rigged test in there favor to prove how this...Read complete review

    Things that aren't so great about it include price, its a gimmick product, and the manufacturer can not prove it works. The manufacturer has rigged test in there favor to prove how this lubricant works.

    Reviewed by 30 customers

    Sort by

    Displaying reviews 1-10

    Back to top

    Previous | Next »

     
    4.0

    I would buy this product again

    By Sam

    from Woodstock ,Ga.

    About Me Auto Enthusiast

    Verified Buyer
    Level 1

    Pros

    • Improves Vehicle Performance
    • Reduces Wear
    • Runs Clean
    • Safe

    Cons

      Best Uses

      • Car
      • Regular Use
      • Truck

      Comments about Z-Max Engine and Fuel Micro-Lubricant:

      Cleans engine parts and adds performance to engine.

      Comment on this review(earn points)

       
      5.0

      great product use again

      By cads67camaro

      from bay city mi

      About Me Auto Enthusiast, Mechanic

      Verified Buyer
      Level 3

      Pros

      • Improves Vehicle Performance
      • Reduces Wear
      • Runs Clean

      Cons

        Best Uses

        • Car
        • Regular Use
        • RV
        • Truck

        Comments about Z-Max Engine and Fuel Micro-Lubricant:

        great product

        Comment on this review(earn points)

         
        1.0

        Don't waste your money

        By nypigskin

        from Long Island, NY

        About Me Truck Enthusiast

        Verified Buyer
        Level 1

        Pros

          Cons

          • Ineffective

          Best Uses

            Comments about Z-Max Engine and Fuel Micro-Lubricant:

            Paperwork that comes with product says their is a class action law suit against company for false claims.

            Comment on this review(earn points)

             
            4.0

            Z MAX

            By VAROOOOM

            from BROOKLYN NY

            About Me Auto Enthusiast

            Verified Buyer
            Level 1

            Pros

            • Improves Vehicle Performance
            • Reduces Wear
            • Runs Clean

            Cons

              Best Uses

              • Car
              • Muscle Car Plymouth 440
              • Regular Use

              Comments about Z-Max Engine and Fuel Micro-Lubricant:

              USE THIS 2 TIMES PER YEAR...FOR GAS AND OIL TREATMENT

              Comment on this review(earn points)

               
              4.0

              Better Milage

              By Rancher350

              from Southern Ohio

              About Me Auto Enthusiast, Casual Driver, Farm And Fleet Operator, Mechanic, Truck Enthusiast

              3 or more reviews submitted

              Pros

              • Great Mpg Increase

              Cons

                Best Uses

                • Car
                • RV
                • Truck

                Comments about Z-Max Engine and Fuel Micro-Lubricant:

                This product(two oil treatments of one bottle) gave my 05 Cummins a increase in mpg from 15.8-18.2 before and to 17.6-21.2 about a 3 mpg increase more than paid for it self on the 2000 mile trip i took, Now i could not tell any difference in preformance off hand,but put on a dyno would have i am sure!

                I sujested to my dad for his Duromax and with only 1 oil treatment on his 8000 mile trip he got 2+ mpg increase.

                Have not used the fuel treatment getting it today.

                Comment on this review(earn points)

                (1 of 1 customers found this review helpful)

                 
                5.0

                Z Max is on line

                By Scooter

                from Shelby, NC

                About Me Motorcyclist

                Pros

                • Improves Vehicle Performance
                • Reduces Wear
                • Runs Clean
                • Safe
                • Works Great In Old Cars

                Cons

                • 055 Oz Online 178 Stor

                Best Uses

                • Car
                • Mc And Cars
                • RV
                • Truck

                Comments about Z-Max Engine and Fuel Micro-Lubricant:

                Get it buy the quart for futher uses, use it in mowers, motorcycles, old cars. Reapply every 6K mile or every other oil change.

                Comment on this review(earn points)

                (5 of 9 customers found this review helpful)

                 
                5.0

                Well worth the money.

                By fob777

                from Duluth GA.

                About Me Casual Driver

                Verified Buyer
                Helpful Reviewer

                Pros

                • Easy to use
                • Great product
                • Improves Vehicle Performance
                • Reduces Wear
                • Runs Clean
                • Safe
                • Works Really Well

                Cons

                  Best Uses

                  • Car
                  • Regular Use

                  Comments about Z-Max Engine and Fuel Micro-Lubricant:

                  This is a great product. It's easy to use. Just add it to the crankcase and go. Well worth the money.

                  Comment on this review(earn points)

                  (3 of 8 customers found this review helpful)

                   
                  5.0

                  If it's good for a cobra snake well.....

                  By Donny

                  from Eden, Ga.

                  About Me Auto Enthusiast, Casual Driver, Mechanic, Truck Enthusiast

                  Verified Buyer
                  Helpful Reviewer

                  Pros

                  • Improves Vehicle Performance
                  • Reduces Wear
                  • Runs Clean
                  • Safe

                  Cons

                    Best Uses

                    • Car
                    • Regular Use
                    • RV
                    • Truck

                    Comments about Z-Max Engine and Fuel Micro-Lubricant:

                    Cost alot but well worth it to me

                    Comment on this review(earn points)

                    (7 of 11 customers found this review helpful)

                     
                    4.0

                    Great product

                    By Guardian

                    from Fenton, MO

                    About Me Auto Enthusiast

                    Verified Buyer
                    Level 2

                    Pros

                    • Improves Vehicle Performance
                    • Reduces Wear
                    • Runs Clean
                    • Safe

                    Cons

                      Best Uses

                      • Car
                      • Regular Use
                      • Truck

                      Comments about Z-Max Engine and Fuel Micro-Lubricant:

                      I've been using this product about every 6 months for the past few years (as recommended by the directions). Since I get my oil changed about every 6 months (full synthetic oil and filter), I usually add this product to my car at the same time I change the oil or within a few days after changing the oil. It's just more convienent to schedule both together.

                      While it helps regardless of mileage or age of vehicle, the sooner you start using it on a consistant basis, the better results you'll get from it. It's designed to be used as a preventitive measure, not to fix what's already been damaged or worn.

                      Comment on this review(earn points)

                      (7 of 13 customers found this review helpful)

                       
                      5.0

                      Absoluteley Amazing

                      By Lexolla

                      from Philly Burbs, PA

                      About Me Mechanic

                      Verified Buyer
                      Level 2

                      Pros

                      • Improves Vehicle Performance
                      • Reduces Wear
                      • Runs Clean
                      • Safe

                      Cons

                        Best Uses

                        • Car
                        • Regular Use
                        • RV
                        • Truck

                        Comments about Z-Max Engine and Fuel Micro-Lubricant:

                        I saw ZMaxx on Power Block TV & was quite interested in it. They had some pretty good claims, so I figured after some research it was safe. Within a few hours of use, I saw increased mileage gains, smoother idles & increased performance. I know this may seem a little far fetched, but I saw a 30% increase in gas mileage in just one tank of gas. I would feel safe using this in not only my custom cars, but in my daily driver Hybrid which is still under Lexus's warranty. I was a Lucas product user for many years and even though I feel their products are great, I feel the ZMaxx is head & shoulders above them.

                        Comment on this review(earn points)

                        Displaying reviews 1-10

                        Back to top

                        Previous | Next »

                        Do you have questions about this product?(earn points for answers!)

                         

                        Ask a question, get answers from real customers and in-house experts. Or contact Customer Care by email or call 1-877-238-2623.

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

                          I have a 2 cycle gas engine in my golf cart. I believe the piston and rings are glazed over. Do you have a product that will remove this problem and improve the compression? Thank You.
                          Curtis Bedore
                          Asked on 3/25/2014 by Curt from Idaho

                          1 answer

                          • CUSTOMER CARE

                            A:

                            I'm happy to help, Curt! Z-Max does make a small engine formula that may help. I also know that Sea Foam is a very popular treatment that claims to remove varnish, carbon and gum from the engine and is made with 100% petroleum products. The results of any engine treatment may vary and cannot be a guaranteed fix. Even after treatment you may still find it necessary to disassemble the parts and clean them separately.

                            Answered on 3/26/2014 by Heath, ASE Parts Specialist from AAP
                        • Q:

                          I have a 2001 mercury sable 3.0EFI DOHC I just changed the oil.can I just add it to the oil and fuel
                          Asked on 1/26/2013 by wayne from arlington tx

                          1 answer

                          • CUSTOMER CARE

                            A:

                            The Z-Max Engine and Fuel Micro-Lubricant (Part No. 51-011) does not replace your regular oil. Using zMAX will not overfill your normal oil level, because it soaks into metal. Simply pour zMAX into your fuel system (12oz.), your engine (12oz.), and transmission (4oz.) or have zMAX installed by your mechanic at your next oil change. The bottles are clearly marked. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

                            Answered on 1/28/2013 by Steve from AAP
                        • Q:

                          does z-max stop smoking in a vehicles
                          Asked on 11/1/2012 by debbie from arab,ala.

                          1 answer

                          • CUSTOMER CARE

                            A:

                            The unique ability of zMAX to soak into metal and reduce engine deposits results in Increased Gas Mileage, Improved Performance, Extended Engine Life, Reduced Emissions, Increased Horsepower. This product may be used as a fuel additive both for gasoline and diesel fuels. When used as a diesel fuel additive, the following statement applies: This diesel fuel additive complies with the federal low sulfur content requirements for use in diesel motor vehicles and non-road engines. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

                            Answered on 11/2/2012 by Steve from AAP
                        • Q:

                          i have a 2004 stratus i bought at an auction an it haz 174k milez on it an i waz wanting to use thiz in it. and i would also like to use a synthetic or blended oil in it aswell. will thiz product be ok to use in conjunction with a blended or full synthetic oil? or doez anyone have any recommendationz??? thankz for your time an look forward to your reply.
                          Asked on 9/17/2012 by louny2ns, soundz like looney tunez from Seffner Fl.

                          2 answers

                          • A:

                            Yes, it is OK to use with any oil.

                            Answered on 1/22/2014 by repo master from TEXAS
                          • CUSTOMER CARE

                            A:

                            Yes, the Z-Max Engine and Fuel Micro-Lubricant (Part No. 51-011) is compatible with synthetic and conventional oils. The unique ability of Z-MAX is to soak into metal and reduce engine deposits. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto store and one of our representatives will gladly assist you with any questions or concerns you may have.

                            Answered on 9/18/2012 by John the Car-Doc from AAP
                        • Q:

                          I just recently developed a slight lifter noise. I changed the oil using 5/30 Royal Purple. This helped but still a slight tick. My car is a 1999 Corvette with the LS1, it only has 45,000 miles. Do you think your oil additives might help with the problem? Thanks!!!!!!!!!!!!!
                          Asked on 9/6/2012 by Quick

                          1 answer

                          • CUSTOMER CARE

                            A:

                            Sorry, without the presence of your vehicle we would not be able to properly diagnose it nor provide you with a 100% answer. We would suggest that you take your vehicle to a certified mechanic for further diagnosis.

                            Answered on 9/7/2012 by Steve from AAP
                        • Q:

                          I have heard that the Z-Max engine treatment and the fuel traetment are exactly the same and can be used interchangeably (i.e., the fuel treatment can be used in the oil and the engine treatment can be used in the fuel system). Is that correct?
                          Asked on 4/13/2012 by M-Dog

                          1 answer

                          • CUSTOMER CARE

                            A:

                            This Z-Max Engine and Fuel Micro-Lubricant with Part No. 51-011 may be used as a fuel additive both for gasoline and diesel fuels. When used as a diesel fuel additive, the following statement applies: This diesel fuel additive complies with the federal low sulfur content requirements for use in diesel motor vehicles and nonroad engines. Simply pour zMAX into your fuel system (12oz.), your engine (12oz.) or have zMAX installed by your mechanic at your next oil change. However zMAX does not replace your regular oil, and using zMAX will not overfill your normal oil level because it soaks into metal.

                            Answered on 4/20/2012 by John the Car-Doc from AAP
                        • Q:

                          Can I use this on my 2000 Mazda 626 LX? (P.S. I have a 4 cylinder 2.0L engine.)
                          Asked on 12/28/2011 by Ant the Newbie from Silver Spring, MD

                          1 answer

                          • CUSTOMER CARE

                            A:

                            Yes, you can use this lubricant in your 2000 Mazda 626LX.

                            Answered on 12/28/2011 by Steve from AAP
                        • Q:

                          My car (98, lexus es300) is leaking out of engine. I will add 'Lucas Oil Products Engine Oil Stop Leak' product. Is it possible to use 'ZMAX Engine Micro-Lubricant' and 'Lucas oil stop leak' together at same time with synthetic oil?
                          Asked on 12/8/2011 by Eric's bob from chandler, AZ

                          1 answer

                          • CUSTOMER CARE

                            A:

                            Yes, ZMAX Engine Micro-Lubricant' and 'Lucas oil stop leak' can be used together at same time with synthetic oil.

                            Answered on 12/10/2011 by Vincent from AAP
                        • Q:

                          Will my 2010r8v10 with 4000miles benefit from using Z Max
                          Asked on 11/10/2011 by Anonymous from Montreal Quebec canada

                          1 answer

                          • CUSTOMER CARE

                            A:

                            Yes, this should work fine.

                            Answered on 11/10/2011 by Steve from AAP
                        • Q:

                          If it is "Mico Lubrication", why does this have to be added every 6 months? Doesn't the lubrication just permanently stay embeded in the surface of the metal? Or does the viscosity break down, causing its affects to wear off?
                          Asked on 8/24/2011 by Anonymous

                          2 answers

                          • CUSTOMER CARE

                            A:

                            All lubricants loose their viscosity after some time duration. It is recommended to use on every 6 months or 6000 miles which ever comes earlier in order to improve or restore gas mileage and reduce emissions.

                            Answered on 8/25/2011 by Vincent from AAP
                          • A:

                            Z-max should be added every 6 months or 6,000 miles, because of thermal breakdown. Over time, it will lose its lubrication quality just like engine oil. Also, adding it at those intervals will help get the most out of your engine in terms of horsepower, gas mileage, and engine longevity.

                            Answered on 10/16/2011 by Chantel from Advance Auto Parts
                        Displaying questions 1-10Previous | Next »

                        Do you have a question about this product? 

                        Create or view your online garage

                        Check out the specials in our monthly flyer

                         
                         
                        Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.