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Home > Racing Supply > Racing Fluids, Oil & Lubricants > Racing Transmission Fluids > Royal Purple Max Gear ® Synthetic Gear Oil > RP-01303 - Royal Purple Max Gear Synthetic Gear Oil

Part #:

01303

Product Name:Royal Purple Max Gear Synthetic Gear Oil
Gear Oil Grade:85W140
Manufacturer: Royal Purple
Brand: Royal Purple Synthetic Oil
Product Line: Royal Purple Max Gear ® Synthetic Gear Oil
Categories: Racing Transmission Fluids, Transmission Fluids
$14.23   $12.81   $1.42  Add to Cart
royal purple synthetic motor engine oil
MaxGear 75w140
6 Reviews
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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.

Product Description
Royal Purple Max-Gear® 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 Gear® 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 Synslide® additive technology.  Max-Gear® makes gears run smoother, quieter, cooler, and longer without overhauls.  Synslide® additive technology makes the difference.  Synslide® additive technology is noncorrosive to gears and bearings, including case-hardened gears more info ...

  • Greater Wear Protection
    Synerlec® additive technology forms a tough, tenacious film on all metal surfaces virtually eliminating engine wear.
  • 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.
  • Lower Coefficient of Friction
    Max-Gear® saves energy, reduces temperatures and maximizes power throughput. (OEM or aftermarket limited slip additives are not required.)
  • High Temperature Performance
    Max-Gear® eliminates harmful deposits and extends oil drain intervals.
  • Low Temperature Fluidity
    Max-Gear® meets operating requirements for vehicles operating in cold climates.
  • Shock Load Protection
    Max-Gear® reduces fatigue failures in bearings and gears.
  • Prevents Corrosion
    Max-Gear® protects both ferrous and nonferrous metals during operation and shutdown.
  • Excellent Water Separation
    Max-Gear® completely separates from water, preventing an oil-water emulsion.
  • Compatible with Other Oils
    Max-Gear® is compatible with other mineral gear oils and other synthetic hydrocarbon gear oils.
  • Meets Warranty Requirements
    Max-Gear® exceeds OEM warranty requirements for GL-5 automotive rear axle hypoid gear lubrication.
  • 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.
Max Gear Features
55 Gallon Drum and 5 Gallon Pail 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.
gear oils gear oils
Greater Wear Protection. Synerlec® additive technology forms a tough, tenacious film on all metal surfaces virtually eliminating engine wear.
MaxGear 75w140 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.
MaxGear 85w140 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-Gear® 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-Gear®?
Yes. Max-Gear® possesses both API GL-5 and GL-4 certification. Max-Gear® is formulated with Royal Purple's proprietary, Synslide® 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
PDF Icon Why Use Royal Purple? (pdf - 111KB)

Note: Adobe Reader is required to view PDF documents: Download Adobe Reader
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
*ALL PROPERTIES ARE TYPICAL AND MAY VARY
Associated Documents
PDF IconRoyal Purple Test Results (pdf - 998KB)
PDF IconMax Gear MSDS Sheet (pdf - 90KB)
PDF Icon Testimonials (pdf - 15KB)

Note: Adobe Reader is required to view PDF documents: Download Adobe Reader
Simply drain existing fluid and replace with Royal Purple Max Gear.  No need for any special treatment before adding.  Royal Purple Max Gear is completely compatible with other oils.  For additional information please call 7-days a week 1-877-216-5446 or 701-253-5906.  You can also email us at cs@realtruck.com.

Royal Purple Max Gear ® Synthetic Gear Oil Customer Reviews

Customer Rating Product
RP-01301 - Royal Purple Max Gear Synthetic Gear Oil
Posted By: Joseph R. (Browns Mills, NJ) on 07/2008
RP-12300 - Royal Purple Max Gear Synthetic Gear Oil
Posted By: Scott B. (Jamestown, ND) on 06/2008
Works great
RP-01300 - Royal Purple Max Gear Synthetic Gear Oil
Posted By: Kelly H. (Jamestown, ND) on 03/2008
great stuff.
RP-12301 - Royal Purple Max Gear Synthetic Gear Oil
Posted By: Eric E. (San Miguel, CA) on 03/2008
RP-01300 - Royal Purple Max Gear Synthetic Gear Oil
Posted By: Kyle Q. (Chisago City, MN) on 03/2008
Product came faster then my local O'Riley's told me they could get it - way, way faster. Very happy with the product, I never worry about a Royal Purple product. Very fast shipping and the product was well packaged - would order from you guys again.
RP-12300 - Royal Purple Max Gear Synthetic Gear Oil
Posted By: William W. (New York, NY) on 12/2007
I am very pleased with how my gears are performing now with RP

Manufacturer Information

royal purple synthetic motor oil
Royal Purple Premium Oil products. Headquartered in Porter, Texas, Royal Purple is a privately-held company that produces a wide range of high performance lubricants for nearly every consumer and industrial application. Its founder was a pioneer in the development of high performance synthetic lubricants. Collectively, Royal Purple's formulators have more than 200 years of expertise in developing high performance lubricants.
View all Royal Purple products

Manufacturer Documents
PDF IconRoyal Purple MSDS Sheet (pdf - 91KB)
PDF Icon Testimonials (pdf - 15KB)
PDF Icon Why Use Royal Purple? (pdf - 111KB)

Note: Adobe Reader is required to view PDF documents: Download Adobe Reader

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