Powered by Mustang Enthusiasts - Call Now (866) 507-3786

Royal Purple Max-Gear Gear Oil & Friction Modifier Kit - 75W-140 by Royal Purple


Details   |  Reviews

Details   |   Reviews
Royal Purple Max-Gear Gear Oil & Friction Modifier Kit - 75W-140
Royal Purple Max-Gear Gear Oil & Friction Modifier Kit - 75W-140
Royal Purple Max-Gear Gear Oil & Friction Modifier Kit - 75W-140
Royal Purple Max-Gear Gear Oil & Friction Modifier Kit - 75W-140
Royal Purple Max-Gear Gear Oil & Friction Modifier Kit - 75W-140
Royal Purple Max-Gear Gear Oil & Friction Modifier Kit - 75W-140

Max-Gear with Ford Motorcraft Friction Modifier, makes gears run smoother, quieter, cooler and longer without overhauls.

Item #RP-12300K

Everyday Low Price: $49.99

In Stock
 This item is returnable. Details

Free Shipping over $99

 Add to Cart

Not Available for APO or Air shipping.


 Benefits

  • Reduces Temperatures
  • Smoother Operation
  • Virtually Eliminates Gear & Bearing Wear

 Features

  • Synthetic Oils
  • API GL-4 / GL-5 Certified
  • 75W-140 Oil Weight

 What's in the Box

  • (2) Quarts Gear Oil
  • (2) Caps w/ Nozzle
  • (1) Bottle Ford Motorcraft Friction Modifier

Max-Gear Gear Oil & Friction Modifier Kit

Whether you are installing new rear-end gears, changing differential gaskets, or replacing your differential fluid, this Royal Purple max gear oil and friction modifier kit is the perfect solution. Featuring a pair of 1-quart bottles of 75W-140  Royal Purple gear oil and one 4oz bottle of friction modifier, this kit has everything you need to refill your differential. Formulated to improve the efficiency of rear-end assemblies and manual transmissions, this kit virtually eliminates both gear and bearing wear. It’s designed to maximize power and provide unsurpassed protection to heavily loaded gears while making gears run smoother, quieter, cooler, and longer without overhauls. Max-Gear outperforms other gear oils because it combines the highest quality synthetic oils with Royal Purple’s proprietary Synslide additive technology. 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 the use of an API GL-5 or GL-4 fluid. All viscosities of Max-Gear are formulated with hypoid friction modifiers necessary for use in clutch or cone type differentials.

Ford Motorcraft Friction Modifier

Although Royal Purple has some friction modifiers in it, the Ford rear ends need a little bit more. This kit includes one bottle of friction modifier to provide smooth operation of clutch-type limited-slip differentials. The specially formulated additive eliminates rear-end chatter for quiet operation.

Fluid Note

  • LMR recommends the 75W140 viscosity for all 1986-2022 8.8" differentials as it is appropriate for most climates, fuel economy, and performance.
  • When running an aftermarket differential cover, check the fluid capacity recommendation as more fluid may be required.

California Residents:
Prop 65 Warning SignWARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

About This Brand


Royal Purple
Royal Purple - Unleash The Power
The most frequent comment from customers is how they can feel the difference in their vehicles after switching to Royal Purple. For instance, Royal Purple Motor Oil typically improves horsepower and torque up to 3%. It also reduces fuel consumption by as much as 5% and typically reduces emissions 20% or more. Performance gains will vary depending on the type of vehicle, its condition, and the way it's driven. Shop Latemodel Restoration to get all of the Royal Purple oil and lubricants you need!

Look for Similar Items by Category

2010-2014 Mustang Parts » 2010-2014 Mustang Drivetrain » 2010-2014 Mustang Rear End Gears » Mustang Rear End Gear Ratios & Axle Info » Mustang Gears & Rear End Gear Kits
2010-2014 Mustang Parts » 2010-2014 Mustang Drivetrain » 2010-2014 Mustang Rear End Gears » Mustang Rear End Gear Ratios & Axle Info » Mustang Gear Install & Bearing Kits
2010-2014 Mustang Parts » 2010-2014 Mustang Drivetrain » 2010-2014 Mustang Rear End Gears » Mustang Rear End Gear Ratios & Axle Info » Mustang Rear End & Axles » Mustang Differential Covers & Girdles
2010-2014 Mustang Parts » 2010-2014 Mustang Drivetrain » 2010-2014 Mustang Rear End Gears » Mustang Rear End Gear Ratios & Axle Info » Mustang Rear End & Axles » Mustang Axle Assembly & Parts
1994-2004 Mustang Parts » 1994-2004 Mustang Drivetrain » 1994-2004 Mustang Rear End Bearing Kits
2005-2009 Mustang Parts » 2005-2009 Mustang Drivetrain » 2005-2009 Mustang Differential Covers
2010-2014 Mustang Parts » 2010-2014 Mustang Drivetrain » 2010-2014 Mustang Rear End Gears » Mustang Rear End Gear Ratios & Axle Info » Mustang Gear Install & Bearing Kits » 2010-2014 Mustang Rear End Bearing Kits
2010-2014 Mustang Parts » 2010-2014 Mustang Drivetrain » 2010-2014 Mustang Differential Covers
Ford Mustang Parts » LMR Mustang Maintenance Parts » Mustang Gear Oil & Friction Modifier
2005-2009 Mustang Parts » 2005-2009 Mustang Drivetrain » 2005-2009 Mustang Rear End Gears
1994-2004 Mustang Parts » 1994-2004 Mustang Drivetrain » 1994-2004 Mustang Rear End Gears
1994-2004 Mustang Parts » 1994-2004 Mustang Drivetrain » 1994-2004 Mustang Rear End & Axles » 1994-2004 Mustang Rear Axle 31 Spline Kits
1979-1993 Fox Body Mustang Parts » 1979-1993 Fox Body Mustang Drivetrain » 1979-1993 Fox Body Mustang Rear End Gears
1979-1993 Fox Body Mustang Parts » 1979-1993 Fox Body Mustang Drivetrain » 1979-1993 Fox Body Mustang Rear End Bearing Kits
1979-1993 Fox Body Mustang Parts » 1979-1993 Fox Body Mustang Drivetrain » 1979-1993 Fox Body Mustang Rear End Covers & Girdles
1994-2004 Mustang Parts » 2003-2004 SVT Cobra Parts » 2003-2004 Cobra Clutches, Shifters, Gears, & More
Ford Mustang Parts » Ford Mustang Engines & Underhood Accessories » Mustang Oil, Octane Boosters, & Fluids
2010-2014 Mustang Parts » 2010-2014 Mustang Drivetrain » 2010-2014 Mustang Rear End Gears » Mustang Rear End Gear Ratios & Axle Info » Mustang Rear End & Axles » Mustang Rear Axle Kit
1979-1993 Fox Body Mustang Parts » 1979-1993 Fox Body Mustang Drivetrain » 1979-1993 Fox Body Mustang Rear End & Axles » 1979-1993 Fox Body Mustang Traction Lock / Differential
1994-2004 Mustang Parts » 1994-2004 Mustang Drivetrain » 1994-2004 Mustang Rear End & Axles » 1994-2004 Mustang Axles
1994-2004 Mustang Parts » 1994-2004 Mustang Drivetrain » 1994-2004 Mustang Traction Lock Differential
2005-2009 Mustang Parts » 2005-2009 Mustang Drivetrain » 2005-2009 Mustang Traction Lock Differentials
2010-2014 Mustang Parts » 2010-2014 Mustang Drivetrain » 2010-2014 Mustang Rear End Gears
2010-2014 Mustang Parts » 2010-2014 Mustang Drivetrain » 2010-2014 Mustang Traction Lock Differentials
1994-2004 Mustang Parts » 1994-2004 Mustang Drivetrain » 1994-2004 Mustang Rear End & Axles » 1994-2004 Mustang Differential Covers
Mustang & Lightning Tech, Articles, How To Videos » 94-04 Mustang Tech, Articles, How To Videos » 94-04 Extras » Texas Mustang Parts
Mustang & Lightning Tech, Articles, How To Videos » 94-04 Mustang Tech, Articles, How To Videos » 94-04 Extras » Dallas Mustang Parts
Mustang & Lightning Tech, Articles, How To Videos » 94-04 Mustang Tech, Articles, How To Videos » 94-04 Extras » Houston Mustang Parts
Mustang & Lightning Tech, Articles, How To Videos » 94-04 Mustang Tech, Articles, How To Videos » 94-04 Extras » San Antonio Mustang Parts
2015-2022 Mustang Parts » 2015-2022 Mustang Drivetrain » 2015-2022 Mustang Rear End Gears

Products by Vehicle

Add to Cart