Towing, heavy hauling and performance driving create shock-loading conditions and elevated heat that threaten the performance and life of manual transmissions and transaxles. Making matters worse, horsepower, torque and towing capacities seem to increase with each new vehicle model year, increasing severity. AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube is specifically formulated to reduce friction and maintain viscosity for long component and fluid life. It is designed to excel in severe-service conditions that exceed the limitations of conventional fluids.

Protects Against Wear & Heat in Severe Applications

Synthetic Manual Transmission & Transaxle Gear Lube is shear-stable and maintains its viscosity despite rigorous mechanical action. It provides a thick lubricating film and contains extreme-pressure additives to protect against wear in severe-service and shock-loading conditions common when towing or hauling. It resists thermal degradation and oxidation for excellent performance in high-temperature applications, such as the New Venture NV-4500 transmission, which retains heat due to its cast-iron housing and is often subject to increased torque from turbodiesel engines.

Quick Shifts & Excellent Protection in Hot Rods and Muscle Cars

Synthetic Manual Transmission Gear Lube's friciton-modified formula and excellent cold-flow properties promote smooth, fast engagement of synchronisers and gears. It protects against wear caused by the high-horsepower, large-displacement engines common to hot rods and muscle cars. It is formulated with seal conditioners to reduce leaks.

Promotes Longevity in Front-Wheel-Drive Transaxles

Synthetic Manual Transmission Gear Lube meets 75W/80W-90 viscosity requirements and exceeds API GL-4 performance requirements for many front-wheel-drive vehicles. Its excellent gear protection, extreme-temperature performance and durability promote maximum longevity and reduced maintenance costs.

Applications & Recommendations

Use in applications requiring a 75W-85, 75W-90 or 80W-90 viscosity gear oil with any of the listed specifications:

  • API GL-4
  • Chrysler* MS-9070
  • ZF* TE-ML 02b, 17a
  • MAN* 341-Z2 (formerly MAN 341 ML)
  • MB 235.5

Replaces GM* part #12346190 and Chrysler* part #4874459.

Examples of transmissions and transaxles requiring a 75W-90, API GL-4 lubricant include certain models of Hyundai*, Infiniti*, Kia*, Lexus*, Mazda*, Mitsubishi*, Nissan*, Suzuki*, Toyota*, Volkswagen* and Hino*.

Examples of street rod and muscle car transmissions include Muncie*, Borg Warner*, Saginaw*, Ford* Toploader*, Dearborn* and New Process*.

  • Protects against increased heat and pressure
  • Outstanding cold-flow properties
  • Protects brass synchronizers
  • Friction-modified
  • Excellent seal compatibility
  • Inhibits rust and corrosion
  • Long service life

Available Pack Sizes

MTGPK 946 mL Easy-Pack
MTGQT 946 mL Bottle
Available by Special Order
MTG05 18.9 L Pail
MTG55 208 L Drum

Additional pack sizes are available by special order. Please contact us for pricing, availability and lead times.

Industry Standards

API
GL-4

Manufacturer Specifications

Chrysler
MS-9070
MAN
341-Z2
Mercedes-Benz
235.5
ZF
TE-ML 02B
TE-ML 17A

Typical Technical Properties

Typical technical properties for AMSOIL MTG are shown below.

Technical PropertyMTG
Brookfield Viscosity28425
Copper Corrosion1B
Flash Point226 (439)
Foam0/0, 0/0, 0/0
Four-Ball Wear Test0.40
Kinematic Viscosity @ 100°C14.0
Kinematic Viscosity @ 40°C80.3
Pour Point-56 (-69)
Viscosity Index181

Fantastic product, fantastic packaging

By: on 6 May 2025
Going from a giant oil syringe, to a tom thumb pump, the easy packs are the single best thing for scumbag drifters ever. Between this (GL-4) and the Severe Gear for the diff, changing driveline fluids in a drift car has never been easier.
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