Diesel trucks accessories offroad ccessories Thoroughbred Tractor Parts ABOUT US | RETURNS FORM | POLICIES | FAQ'S | VIEW CART | CHECKOUT
100% customer guarantee
join our newsletter Thoroughbred Diesel
brands performance stock parts apparel Wades Pick
customer guarantee
shop by diesel
shop by
read our low price guarantee
gift cards
diesel zone
Royal Purple logo

Royal Purple Max-Gear Oil


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.

Max-Gear is an ultra-tough, high performance, GL-5 automotive gear oil designed to provide maximum protection to heavily loaded gears while maximizing power output throughout the drive train. It outperforms other GL-5 gear oils because it combines the highest quality synthetic oils with Royal Purple's proprietary Synslide additive technology.

Synslide® additive technology, Royal Purple's tough, EP lubricating film, provides maximum protection under boundary lubrication conditions typically caused by heavily loaded, slow speed and / or shock load conditions. This tenacious, slippery film significantly improves lubrication and reduces wear by increasing the oil film thickness and toughness, which helps to prevent metal-to-metal contact in gears and bearings.

Synslide® additive technology is noncorrosive to gears and bearings, including case-hardened gears that are easily pitted by conventional sulfur-phosphorus EP oils. Synslide® additive technology displaces water from metal surfaces and excels in protecting equipment in wet environments. It also fortifies the oil against the detrimental effects of heat, which causes oil to oxidize.

All viscosities of Max-Gear are formulated with hypoid friction modifiers necessary for use in clutch or cone type differentials. No additional additives are necessary.

Benefits of Royal Purple Max-Gear Oil Below
  • Greater Wear Protection
  • Severe Service Performance
  • Lower Coefficient of Friction
  • High Temperature Performance With Low Temperature Fluidity
  • Shock Load Protection
  • Excellent Water Separation Prevents Corrosion
  • Compatible with Other Oils
  • Meets Warranty Requirements
  • Environmentally Responsible
Related Products: Mag Hytec Differential Covers
Product Description Size Part # Cost
Max Gear
5 Gal. Pail 5300 $321.84
Max Gear
12 Qt. Case 12300 $230.69
Max Gear
Qt. Bottle 01300 $19.22
Max Gear
5 Gal. Pail 5301 $321.84
Max Gear
12 Qt. Case 12301 $230.69
Max Gear
Qt. Bottle 01301 $19.22
Max Gear
12 Qt. Case 12303 $230.69
Max Gear
Qt. Bottle 1303 $19.22
Thoroughbred Diesel logo glowing Thoroughbred Diesel Performance and Repair Shop
4843 Rockwell rd.
Winchester, KY 40391
Call Toll Free: 1-866-737-4966
Copyright© 2003-2017 Thoroughbred Diesel All rights reserved.
Site Map
Customer Reviews
100% customer guarantee