Synthetic oils enable Royal Purple to make superior lubricants, however, the advanced Synerlec additive technology of Royal Purple adds to the performance brilliance.

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.

Its ultra-tough, high performance properties is engineered to provide maximum protection to the heavily loaded gears keeping in mind how to provide optimum power output throughout the drive. It outperforms other GL-5 gear oils because it combines the highest quality synthetic oils with Royal Purple's proprietary Synslide additive technology.

Royal purple gear oil makes the car run smoother and longer while keeping the gear cool, consequently making it run without any overhauls.

Benefits of Duralec Gear Oil HD

Severe Service Performance - Duralec Gear Oil HD exceeds Eaton’s stringent GL-5 / MIL-L-2105D Gear Oil Specs. Duralec Gear Oil HD is also a safe option for GL-4 applications or bronze synchro gears.

High Temperature Performance – The gear oil lowers the damaging deposits and helps prolonging the oil drain intervals.

Lower Coefficient of Friction The best version of the gear oil from Royal Purple saves energy, reduces temperatures and enhances the power throughput. The OEM or aftermarket slip additives are also not necessary.

Low Temperature Fluidity It is also perfectly engineered for the vehicle in cold climates.

Shock Load Protection It helps reducing fatigue failures in bearings and gears.

Excellent Water Separation The gear oil from Royal Purple completely separates from water, suppressing the oil-water emulsion.

Prevents Corrosion- It protects the other engine parts (both ferrous and nonferrous metals) during operation and shutdown.

Environmentally Responsible The components are TSCA listed and fulfil all the criteria of RCRA, EPA, and OSHA. Duralec Gear Oil HD eliminates premature oil changes, extends oil drain intervals, reduces the amount of oil purchased and eventually helps in conserving energy.

Benefits of MAX GEAR high performance gear oil

  • Maximizes horsepower
  • Prolongs gear and bearing life
  • Decreases operating temperature
  • Lower coefficient of friction
  • Provides excellent corrosion protection
  • Contains limited-slip friction modifier
  • Separates water from the mix rapidly
  • Engineered for using in open, limited-slip and locking differential

 Your common queries answered

Q :Is it okay to use Max ATF in transmission?

Verify the owner’s manual to find out the list of the warranty applications that can be used.

Q: Do vehicles with limited-sip differential need to add any friction modifiers while using Max Gear?

All viscosity grades of Royal purple gear oil, Max Gear are designed with limited-slip friction modifier which makes it perfect for limited-slip differentials and thus, no additional  friction modifiers or additives are required.

Q: For a vehicle with specified API GL-4 gear oil, will Max Gear serve the purpose?

Max Gear is completely non-corrosive to soft yellow metals which includes copper, brass and bronze. This makes it perfectly compatible with GL-4 gear oil. Additionally, it has Royal Purple’s proprietary Synerlec additive technology that makes it retain the load of shock protection capability of a GL-5 gear oil.

Gear Oil

Max Gear 75 W 90

Max Gear 75 W 90

List Price : $20.16 Our Price : $16.13
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Max Gear 75W140 Quarts

Max Gear 75 W 140 Quarts

List Price : $24.01 Our Price : $19.21
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Max Gear 85W140

Max Gear 85w140 Quarts

List Price : $20.16 Our Price : $16.13
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