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Royal Purple Max Gear ® Synthetic Gear Oil |
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Royal Purple Max-GearŽ is recommended for use in truck, RV / Motorhome, and automotive front and rear differentials, manual transmissions and lower gear units of marine engines that specify the use of an API GL-5 or GL-4 fluid. Max GearŽ is an ultra-tough, high performance, GL-5 automotive gear oil designed to provide maximum protection to heavily loaded gears while maximizing power through the drive train. It outperforms other GL-5 gear oils because it combines the highest quality synthetic oils with Royal Purples proprietary SynslideŽ additive technology. Max-GearŽ makes gears run smoother, quieter, cooler, and longer without overhauls. SynslideŽ additive technology makes the difference. SynslideŽ additive technology is noncorrosive to gears and bearings, including case-hardened gears that are easily pitted by conventional sulfur-phosphorus EP oils. SynslideŽ technology displaces water from metal surfaces and excels in protecting equiptment in wet environments. It also fortifies the oil against the detrimental effects of heat, which causes oil to oxidize. Synslide additive technology is truely Beyond Synthetic. 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.
- Greater Wear Protection
SynerlecŽ additive technology forms a tough, tenacious film on all metal surfaces virtually eliminating engine wear. - Severe Service Performance
Max-GearŽ exceeds Eaton's stringent GL-5 / MIL-L-2105D Gear Oil Specs. Max-GearŽ also is safe for GL-4 applications or bronze synchro gears. - Lower Coefficient of Friction
Max-GearŽ saves energy, reduces temperatures and maximizes power throughput. (OEM or aftermarket limited slip additives are not required.) - High Temperature Performance
Max-GearŽ eliminates harmful deposits and extends oil drain intervals. - Low Temperature Fluidity
Max-GearŽ meets operating requirements for vehicles operating in cold climates. - Shock Load Protection
Max-GearŽ reduces fatigue failures in bearings and gears. - Prevents Corrosion
Max-GearŽ protects both ferrous and nonferrous metals during operation and shutdown. - Excellent Water Separation
Max-GearŽ completely separates from water, preventing an oil-water emulsion. - Compatible with Other Oils
Max-GearŽ is compatible with other mineral gear oils and other synthetic hydrocarbon gear oils. - Meets Warranty Requirements
Max-GearŽ exceeds OEM warranty requirements for GL-5 automotive rear axle hypoid gear lubrication. - Environmentally Responsible
Max-GearŽ components are TSCA listed and meet EPA, RCRA and OSHA requirements. Max-GearŽ extends oil drain intervals, eliminates premature oil changes, decreases the amount of oil purchased and disposed of and conserves energy.
| Max Gear Features | |
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55 Gallon Drum and 5 Gallon Pail Severe Service Performance. Max-Gear® exceeds Eaton's stringent GL-5 / MIL-L-2105D Gear Oil Specs. Max-Gear® also is safe for GL-4 applications or bronze synchro gears. |
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gear oils Greater Wear Protection. Synerlec® additive technology forms a tough, tenacious film on all metal surfaces virtually eliminating engine wear. |
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MaxGear 75w140 Environmentally Responsible. Max-Gear® components are TSCA listed and meet EPA, RCRA and OSHA requirements. Max-Gear® extends oil drain intervals, eliminates premature oil changes, decreases the amount of oil purchased and disposed of, and conserves energy. |
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MaxGear 85w140 Meets Warranty Requirements. Max-Gear® exceeds OEM warranty requirements for GL-5 automotive rear axle hypoid gear lubrication. |
Why Use Royal Purple? See Below
My vehicle has a locking differential. Do I need to add additional friction modifiers when using your Max-Gear?
No. All viscosities of Max-GearŽ are formulated with hypoid friction modifiers necessary for use in clutch or cone type differentials. No additional additives are necessary.
My vehicle's transmission specifies an API GL-4 gear oil. Can I use Max-GearŽ?
Yes. Max-GearŽ possesses both API GL-5 and GL-4 certification. Max-GearŽ is formulated with Royal Purple's proprietary, SynslideŽ additive technology to provide the exceptional film strength necessary for GL-5 applications, yet it is noncorrosive to soft metals found in manual transmissions that specify a GL-4 rated lubricant.Associated Documents
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My vehicle has a locking differential. Do I need to add additional friction modifiers when using your Max-Gear?
No. All viscosities of Max-GearŽ are formulated with hypoid friction modifiers necessary for use in clutch or cone type differentials. No additional additives are necessary.
My vehicle's transmission specifies an API GL-4 gear oil. Can I use Max-GearŽ?
Yes. Max-GearŽ possesses both API GL-5 and GL-4 certification. Max-GearŽ is formulated with Royal Purple's proprietary, SynslideŽ additive technology to provide the exceptional film strength necessary for GL-5 applications, yet it is noncorrosive to soft metals found in manual transmissions that specify a GL-4 rated lubricant.Associated Documents
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| Typical Properties* | |||||
| SAE GRADE | 75W90 | 75W140 | 80W90 | 85W140 | SAE90 |
| Viscosity | |||||
| cSt @ 40°C | 144.5 | 245 | 150.3 | 320 | 189.1 |
| cSt @ 100°C | 21 | 33.6 | 16.8 | 28 | 18.2 |
| SSU @ 100°F | 739 | 1255 | 782 | 1686 | 993 |
| SSU @ 210°F | 105 | 163 | 87 | 138 | 93 |
| CP @ -12°C | — | — | 10,110 | — | — |
| CP @ -40°C | 59,911 | 97,555 | — | — | — |
| Flash °F | 430 | 430 | 430 | 430 | 430 |
| Pour Point °F | -40 | -40 | -40 | -40 | -40 |
| Corrosion Test | |||||
| Copper | Pass | Pass | Pass | Pass | Pass |
| Bronze | Pass | Pass | Pass | Pass | Pass |
| Rust Test | |||||
| Fresh Water | Pass | Pass | Pass | Pass | Pass |
| Salt Water | Pass | Pass | Pass | Pass | Pass |
| Foam Test | Pass | Pass | Pass | Pass | Pass |
| Timken OK Load, Lbs. | 100+ | 100+ | 100+ | 100+ | 100+ |
| Four Ball EP Test | |||||
| Weld Load, kgf | 400 | 400 | 400 | 400 | 400 |
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Royal Purple Max Gear Ž Synthetic Gear Oil Customer Reviews
 Shipping Notes: Ships Oversize Ships Truck Freight Additional Shipping Notes: Only 55 Gallon Drums Ship Truck Freight: Please allow 2-3 weeks for delivery of 55 Gallon Drums Only Case & Gallon orders require oversize shipping. Oils & Fluid cannot be shipped to an APO or FPO. |
Manufacturer Information View all Royal Purple products Manufacturer Documents Note: Adobe Reader is required to view PDF documents: Download Adobe Reader View available Products for this Product Line |
