Red Line 75W85 (75W-85) GL-5 Fully Synthetic Gear Oil – Ester-Based Hypoid Differential/Final Drive/Transfer Case Fluid – LSD Safe with Friction Modifiers – BMW G1/G2/G3, Ford WSS-M2C942-A, MB 235.74, Toyota 08885-02506 – Part 50109

Red Line 75W85 (75W-85) GL-5 Fully Synthetic Gear Oil – Ester-Based Hypoid Differential/Final Drive/Transfer Case Fluid – LSD Safe with Friction Modifiers – BMW G1/G2/G3, Ford WSS-M2C942-A, MB 235.74, Toyota 08885-02506 – Part 50109

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Red Line 75W85 GL-5 Fully Synthetic Gear Oil - Differential, Final Drive and Transfer Case Fluid

Looking for the best 75W85 GL-5 gear oil for your differential, final drive or transfer case? Red Line 75W85 GL-5 Gear Oil is a premium fully synthetic ester-based diff oil that delivers exceptional protection, quieter operation and long-lasting performance for road, track and off-road use. Formerly known as LightWeight Gear Oil, this 75W-85 GL5 gear oil is a favourite upgrade for BMW, Toyota, Lexus, Jeep, Ford, GM, Mercedes-Benz, Audi, VW and more. Ideal for hypoid gears and limited-slip differentials, it contains friction modifiers for most LSDs so no additional additive is required in most applications.

Part Number: 50109

  • Fully synthetic 75W85 GL-5 gear oil for differentials, final drives and transfer cases
  • Built on ester base stocks for superior film strength, shear stability and thermal control
  • Includes friction modifiers for clutch-type limited-slip differentials - for most LSDs no extra friction modifier is required
  • High VI for consistent viscosity and protection across cold start and high temperature conditions
  • Lower operating temperatures and reduced sliding friction in hypoid gears
  • Excellent oxidation resistance for extended drain intervals and less wear
  • Exceeds API GL-5 specifications and suitable for performance and racing use
  • Satisfies gear oil viscosity requirements of SAE 75W80, 75W, 80W and 85W, as well as SAE 30 and SAE 10W30 engine oil

Nforcd recommends this Red Line 75W-85 GL-5 for drivers who want maximum differential protection, smooth and quiet operation, and OEM-level compatibility with the added benefits of a fully synthetic performance gear oil. We use it in our own builds and customer cars and feedback on durability, noise reduction and overall driveline feel has been excellent.

Where to use it

  • Differential oil - perfect for hypoid gear sets
  • Final drive oil - road, performance and motorsport applications
  • Transfer case fluid - where a GL-5 75W85 is specified
  • Popular in many late-model BMW, Dodge, Ford, GM, Jeep, Lexus, Mercedes-Benz, Ram and Toyota applications
  • Also popular in many Formula racing transaxles including Hewland LD-200 and FTR sequential

Important: This product is not designed for use in most manual transmissions or transaxles with synchronisers, as the extreme slipperiness may cause shifting issues. Always check your owner’s manual for the correct specification and viscosity.

Standards and specifications

  • API GL-5
  • MT-1
  • MIL-L-2105E
  • SAE J2360

OEM compatibility and equivalents

Compatible with a wide range of OEM requirements. Common references include:

  • BMW/Mini: 83 12 0 445 838; 83 22 2 295 532; 83 22 2 413 511; 83 22 2 413 512; Castrol BOT 448; Hypoid Axle Oil G1, G2, G3
  • Chrysler/Dodge/Jeep: 05136035AA; 68083381AA
  • Ford: WSS-M2C942-A; XY-75W85-QL
  • GM: 88862826; 92184900; SAF Carbon Mod
  • Honda/Acura: 08200-9014A; Hypoid Gear Oil HGO-1
  • Mazda: K020-01-SG1
  • Mercedes-Benz: MB 235.15; MB 235.7; MB 235.74; MB A 001989 59 03; MB A 0012 989 33 03
  • Nissan/Infiniti: KDL38-75801P
  • Toyota/Lexus: 08885-02506; 08885-02606; 08885-81060; Gear Oil LT/LX
  • VW/Audi: G 052 513
  • Volvo: G 052 513
  • Additional marques commonly using this grade: Acura, Alfa Romeo, Audi, Buick, Cadillac, Fiat, Genesis, GMC, Hyundai, Infiniti, Jaguar, Jeep, Kia, Land Rover, Lexus, Lincoln, MG

Why choose Red Line 75W85 GL-5?

  • Premium ester base stocks for superior lubrication under extreme pressure
  • Friction modifiers for proper limited-slip differential operation
  • Outstanding shear stability and oxidation resistance compared with conventional oils
  • Improved differential efficiency for better mileage, longer service life and less wear

Fitting and service

Need your differential or transfer case serviced with 75W85 GL-5 gear oil? Book in with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.

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