Max-Gear 75W90
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Royal Purple Max-Gear 75W90

Part No. 01300 Warranty Details  
Max-Gear is an ultra-tough automotive gear oil. It's designed to maximize power and provide unsurpassed protection to heavily loaded gears. It helps make gears run smoother, quieter, cooler and longer without overhauls. Max-Gear is recommended for use in truck, motor home/RV, and automotive front or rear differentials, manual transmissions, and lower gear units of marine engines that specify use of an API GL-5 or GL-4 fluid.
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Size (oz.):32
Container Type:Pour Bottle
Concentrated:No

REVIEW SNAPSHOT®

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Royal PurpleMax-Gear 75W90
 
4.7

(based on 29 reviews)

Ratings Distribution

  • 5 Stars

     

    (23)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

93%

of respondents would recommend this to a friend.

Pros

  • Reliable (16)
  • Can withstand use (15)
  • Easy to use (12)

Cons

  • Pricey / poor value (3)

Best Uses

  • Home garage (16)
  • Upkeep (14)
  • Automotive repair shop (8)
    • Reviewer Profile:
    • Auto enthusiast (9), Casual driver (6), Mechanic (3)
    • Reviewer Profile:
    • Auto enthusiast (10), Casual driver (4), Truck enthusiast (4), Competitive driver (3), Mechanic (3)

Most Liked Positive Review

 

You Get What You Pay For.

I will not pay less for protection when it comes to lubricants.You spend 600.00 for a set of 4:88 gears from Eaton,why spend [$] for protection. To me its a no...Read complete review

I will not pay less for protection when it comes to lubricants.You spend 600.00 for a set of 4:88 gears from Eaton,why spend [$] for protection. To me its a no brainer.

VS

Most Liked Negative Review

 

Not ideal for my G35

Product is probably excellent, but it didn't work for my 2005 Infiniti G35. Royal Purple tech support said it was fine for both my GL-4 grade manual transmission and my GL-5...Read complete review

Product is probably excellent, but it didn't work for my 2005 Infiniti G35. Royal Purple tech support said it was fine for both my GL-4 grade manual transmission and my GL-5 differential. When the weather turned cold in TN, the differential started to whine (sounded like a window leaking air), Switched the diff back to conventional Valvoline 80W-90 GL-5 and the whine stopped. Transmission works ok with the Royal Purple but does not shift as easily. I was expecting easier cold shifting due to the lower winter viscosity. I have no plans to change the transmission. Bottom line is the product was not ideal for my G35.

Reviewed by 29 customers

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Displaying reviews 1-10

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5.0

GREAT gear lube for truck,boat,and cycle

By 

from Lakeland, FL

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

Pros

  • Can Withstand Use
  • Easy To Use
  • Motorcycle Final Drive
  • Outboard Motor Lower Unit
  • Reliable
  • Truck Differential

Cons

    Best Uses

    • Home Garage
    • Upkeep

    Comments about Royal Purple Max-Gear 75W90:

    I used this gear lube in my 2005 Chevy Silverado and in the lower unit of my 2015 Tohatsu/Nissan 9.8hp outboard boat motor. It goes well beyond the specifications for both my truck and outboard motor. I also use it in the final drive of my motorcycle (Suzuki C109R Boulevard 1800) and it's great.

    Comment on this review(earn points)

    (0 of 2 customers found this review helpful)

     
    3.0

    Not ideal for my G35

    By 

    from Franklin TN

    About Me Auto Enthusiast

    Ask me a question

    Level 3

    Pros

      Cons

      • Makes G35 Diff Whine

      Best Uses

        Comments about Royal Purple Max-Gear 75W90:

        Product is probably excellent, but it didn't work for my 2005 Infiniti G35. Royal Purple tech support said it was fine for both my GL-4 grade manual transmission and my GL-5 differential. When the weather turned cold in TN, the differential started to whine (sounded like a window leaking air), Switched the diff back to conventional Valvoline 80W-90 GL-5 and the whine stopped. Transmission works ok with the Royal Purple but does not shift as easily. I was expecting easier cold shifting due to the lower winter viscosity. I have no plans to change the transmission. Bottom line is the product was not ideal for my G35.

        Comment on this review(earn points)

        (2 of 2 customers found this review helpful)

         
        5.0

        Does what it says and then some

        By 

        from Ruskin, Fl.

        About Me Auto Enthusiast

        Verified Buyer
        Level 1

        Pros

          Cons

            Best Uses

            • Automotive Repair Shop
            • Home Garage

            Comments about Royal Purple Max-Gear 75W90:

            Tried other products to quiet the rear end chatter in my posi-traction 1978 Corvette. One application with Royal Purple Max-Gear 75W90 took care of the problem.

            Comment on this review(earn points)

            (0 of 2 customers found this review helpful)

             
            1.0

            Plastic Flakes in product

            By 

            from shelton,ct

            Level 1

            Comments about Royal Purple Max-Gear 75W90:

            When I got to the bottom of the bottle- there were purple plastic flakes coming out- would not recommend- never saw anything like this with other products I have bought

            Comment on this review(earn points)

            (0 of 2 customers found this review helpful)

             
            5.0

            Excellent product

            By 

            from Franklin TN

            About Me Auto Enthusiast, G35 Driver

            Ask me a question

            Verified Buyer
            Level 3

            Pros

            • Built-in Limited Slip
            • Versatile Gl4gl5
            • Wide Temp Range

            Cons

              Best Uses

              • Diffential
              • Differential
              • Manual Trans

              Comments about Royal Purple Max-Gear 75W90:

              Internet research led us to Royal Purple. This fluid is GL4/GL5 compatible so you can use it in an Infiniti G35 manual six-speed trans and the differential. I have installed it in the differential and it is fine. I don't have the ability to tell if it makes any difference, i.e., smoothness, MPG, etc. It took 2 quarts. I plan to use the other 4 qts. on the manual transmission once the weather cools. Bottles have a "barbed" tip so it is easy to use clear tubing to fill, if desired.

              Comment on this review(earn points)

              (1 of 2 customers found this review helpful)

               
              5.0

              It's Royal Purple !!!

              By 

              from Beckley WV

              About Me Auto Enthusiast, Casual Driver

              Level 6

              Pros

              • Can Withstand Use
              • Easy To Use
              • Reliable

              Cons

              • None

              Best Uses

              • Automotive Repair Shop
              • Home Garage
              • Upkeep

              Comments about Royal Purple Max-Gear 75W90:

              It is Royal Purple, what more needs to be said ??? Other then the cost, this product is awesome !!! I used it in the rear differential of a 1995 Jeep Grand Cherokee.

              Comment on this review(earn points)

              (1 of 1 customers found this review helpful)

               
              4.0

              I would buy again

              By 

              from upstate new york

              About Me Casual Driver

              Ask me a question

              Verified Buyer
              Level 3

              Pros

              • Easy To Use
              • Good Oil

              Cons

                Best Uses

                • Upkeep

                Comments about Royal Purple Max-Gear 75W90:

                I just purchased used truck, wanted to start-out knowing gear oil is changed. This oil is highly recommended by several mechanics I know.

                Comment on this review(earn points)

                (1 of 1 customers found this review helpful)

                 
                4.0

                get what yiu pay for.

                By 

                from Franklin,tn

                About Me Auto Enthusiast, Competitive Driver

                Verified Buyer
                Level 3

                Pros

                • Reliable

                Cons

                  Best Uses

                  • Upkeep

                  Comments about Royal Purple Max-Gear 75W90:

                  Awesomeness

                  Comment on this review(earn points)

                  (1 of 3 customers found this review helpful)

                   
                  5.0

                  Great OIL!

                  By 

                  from Sacramento, CA.

                  About Me Auto Enthusiast

                  Verified Buyer
                  Level 3

                  Pros

                  • Can Withstand Use
                  • Easy To Use
                  • Reliable

                  Cons

                    Best Uses

                    • Home Garage
                    • Upkeep

                    Comments about Royal Purple Max-Gear 75W90:

                    Great Oil! Better than Amsoil any day!

                    Comment on this review(earn points)

                    (1 of 3 customers found this review helpful)

                     
                    5.0

                    Max-Gear 75W90 Royal Purple

                    By 

                    from Palm Bay, FL

                    About Me Competitive Driver

                    Verified Buyer
                    Level 1

                    Pros

                    • Can Withstand Use

                    Cons

                      Best Uses

                      • Home Garage

                      Comments about Royal Purple Max-Gear 75W90:

                      Trying out new worm gear drive in my modified 8.8 rear end. Seems to work excellent so far.

                      Comment on this review(earn points)

                      Displaying reviews 1-10

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                      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.

                      32 Questions | 34 Answers
                      Displaying questions 1-10Previous | Next »
                      • Q:

                        Hi! Will this lubricant work in my 2003 chevy silverado 4x4 rear differential? Also what is the capacity that my rear differential holds?
                        Asked on 1/3/2015 by cliff14043 from Depew,NY

                        1 answer

                      • Q:

                        Is this compatible for 2000 Nissan frontier 5 speed transmission with synchronizer trans
                        Asked on 12/14/2014 by Billy from VA

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi Billy, glad to assist you! Yes, this Royal Purple Max Gear 75W-90 is compatible with the 5 speed manual transmission on a 2000 Nissan Frontier. I do not recommend topping off/mixing this with another brand product. If you are wanting to use the Max Gear 75W-90 in your manual transmission I would recommend draining out all of the oil that is in the transmission, and doing a complete fill with the Max Gear 75W-90. Any residual amounts that are left by the previous fluid used in the transmission will mix and be compatible with the Max Gear 75W-90.

                          Answered on 12/15/2014 by Solomon
                      • Q:

                        is this the right product for a 2003 dodge ram 1500 3.7 L
                        Differential if so how much do I need to re fill the Differential
                        thank you
                        Asked on 12/1/2014 by bmc from florida

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi Bmc, I'm glad to help you! No, part #01300 is Royal Purple Max Gear 75W-90. Your 2003 Dodge Ram 1500 3.7L V6 will have the 9.25 inches rear differential, and that differential calls for a 75W-140 viscosity. I therefore recommend Royal Purple Max Gear 75W-140 (part #01301, quart bottle). Your 9.25 inches rear differential takes 2.45 quarts.

                          Answered on 12/5/2014 by Solomon
                      • Q:

                        Is this the right grade of gear oil for a 1995 Jeep Grand Cherokee rear differential ???
                        Asked on 3/30/2014 by Ashley from Beckley WV

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Hi Ashley, glad to assist you! The gear lubricants designed for API Service classification GL-5 80w90 would work fine for your 1995 Jeep Grand Cherokee. We have Advance Auto Parts 80W-90 Gear Oil (Part No. ELG0803/12405) which is an exact oil for your vehicle.

                          Answered on 3/31/2014 by Steve from AAP
                      • Q:

                        Is this the right grade of oil to use in a 1995 Jeep Grand Cherokee front and rear differential ??? 75w90
                        Asked on 3/28/2014 by Ashley from Beckley WV

                        1 answer

                      • Q:

                        Anybody ever use this in an Eaton Locker (G80) differential? I'm sure it would be good but I'm trying to avoid LS fluids.
                        Asked on 3/22/2014 by tcase from denver, co

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Good question, TCase! We have not received negative feedback from owners of GM vehicles using the Eaton G80 locking differential, indicating that the use of Royal Purple Max Gear 75W-90 (part #01300, quart bottle) in those differentials, had caused any issues from the friction modifier that’s included in the product. Max Gear is our normal recommendation and it works great. However, if you absolutely prefer a Royal Purple gear lube that does not include an LSD-FM (limited slip differential friction modifier) at all, I need you to provide your vehicle's year, make, model and engine size so we can assist you further.

                          Answered on 3/26/2014 by John the Car-Doc from AAP
                      • Q:

                        Will this work in a 2000 vw tdi manual?
                        Asked on 5/29/2013 by Adam

                        1 answer

                        • CUSTOMER CARE

                          A:

                          This Royal Purple Max-Gear 75W90 - Part No. 01300 is work fine with your 2000 Volkswagen Jetta TDI 5 speed manual transmission and is recommended for use in truck, motor home / RV, and automotive front or rear differentials, manual transmissions, and lower gear units of marine engines that specify use of an API GL-5 or GL-4 fluid. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                          Answered on 5/29/2013 by Morgan from AAP
                      • Q:

                        Will this be good in my 2007 VW Jetta 2.5 Wolfsburg 5 speed manual?
                        Asked on 2/22/2013 by scott

                        1 answer

                        • CUSTOMER CARE

                          A:

                          With reference to your inquiry on the Royal Purple Max-Gear 75W90 (Part No. 01300), it is a synthetic product, all Royal Purple are.This will do fine for your 2007 VW Jetta 2.5 Wolfsburg 5 speed manual transmissions and lower gear units.For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have

                          Answered on 2/25/2013 by Morgan from AAP
                      • Q:

                        2009 Toyota Tacoma 4x4 differential?
                        Asked on 2/14/2013 by Flashlight from Cincinnati, Oh

                        1 answer

                        • CUSTOMER CARE

                          A:

                          This Royal Purple Max-Gear 75W90 -part#01300 is recommended for use in truck, motor home / RV, and automotive front or rear differentials, manual transmissions, and lower gear units of marine engines that specify use of an API GL-5 or GL-4 fluid. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                          Answered on 2/15/2013 by Vincent from AAP
                      • Q:

                        Will this work on my 2003 Ford Crown Victoria P71?
                        Asked on 1/18/2013 by Marcos from Lubbock,TX

                        1 answer

                        • CUSTOMER CARE

                          A:

                          The Royal Purple Max-Gear 75W90 (Part No. 01300) is recommended for use in truck, motor home/RV, and automotive front or rear differentials, manual transmissions, and lower gear units of marine engines that specify use of an API GL-5 or GL-4 fluid. 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 1/19/2013 by Steve from AAP
                      Displaying questions 1-10Previous | Next »

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