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AMSOIL Manual Transmission & Transaxle Gear Lube
SAE 75W-90 API GL-4


New Updated website to soon replace this one - See Oilordering.com and our MTG Page

A few years have passed since the debut of the AMSOIL Manual Transmission GL-4. It has really become a top seller. First, there aren't too many quality GL-4 75W90 (or 80W90) on the market. The synthetic products offered by our competitors eventually cause shift/downshift issues. I'm writing this due to several calls. One recently was from a fellow Studebaker Hawk owner who called to tell me there was a write-up in the last issue of the Studebaker Club Magazine, the "Turning Wheels". It praised AMSOIL over other brands such as Redline for solving hard shifting issues. Protect your synchronizers!

Use a product approved for specific GM and Chrysler use w/o paying the OEM price! Use AMSOIL MTG!

 

Synthetic Manual Transmission and Transaxle
Gear Lube 75W-90 API GL-4 (MTG)

AMSOIL's Manual Transmission Problem Solver - Quality!

AMSOIL Synthetic Manual Transmission and Transaxle Gear Lube (MTG) is designed to meet the special requirements of certain manual transmissions and transaxles as well as those requiring GL-4 performance, such as the New Venture NV4500. Formulated specifically for demanding manual transmission and transaxle applications.

Package sizes include:
Quart Bottle
Quart Bottles (case of 12)
5-Gallon Pail
55-Gallon Drum

 

Download this printable PDF Product Data Sheet for Manual Transmission 75W-90 GL4

Call for wholesale pricing, account set-up or quick ordering: 1-800-579-0580

 

Buy Amsoil Synthetic Manual Transmission Gear Lube 75W90 In the Online Store Now

 

For maximum performance with this popular transmission gear lube please try our fuel additives and Severe Gear differential GL5 hypoid gear lubes as well. The Severe Gear drops temperatures by 50 degrees and can reduce drag leading to a 2 to 3% increase in fuel efficiency.

 

Vehicle Look Up Table: Matches AMSOIL's products to your vehicles.

 

"State of the Art GL-4 Chemistry"
Replacing AMSOIL's prior 80W-90 Synthetic Gear Lube (AGT), the AMSOIL MTG provides improved internal component protection. Many of these transmissions are cast iron and have exhaust pipes close to them, causing them to run hot. Increased operating temperatures can harden seals and cause oil leaks. In addition to lubricating gears, bearings and synchromesh systems, transmission oil must keep seals soft even when temperatures increase.

AMSOIL uses a unique seal additive though out the gear lube line others avoid because of costs. The premium synthetic formulation of AMSOIL Synthetic Manual Transmission and Transaxle Gear Lube is designed to specifically address the needs of these hot running transmissions.

PRODUCT DESCRIPTION

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.

A few years have passed since the debut of the AMSOIL Manual Transmission GL-4. It has really become a top seller. First, there aren’t too many quality GL-4 75W90 (or 80W90) on the market. The synthetic products offered by our competitors eventually cause shift/downshift issues as they age. I’m writing this due to several testimonial calls. One recently was from a fellow Studebaker Hawk owner who called to tell me there was a write-up in the last issue of the Studebaker Club Magazine, the “Turning Wheels”. It praised AMSOIL over other brands such as Redline for solving hard shifting issues. Protect your synchronizers!

Use a product approved for specific GM and Chrysler use w/o paying the OEM price! Use AMSOIL MTG!

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 friction-modified formula and excellent cold-flow properties promote smooth, fast engagement of synchronizers 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 GL4 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.

  • 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

Applications
Synthetic Manual Transmission & Transaxle Gear Lube is recommended for 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.

“State of the Art GL-4 Chemistry”

Replacing AMSOIL’s prior 80W-90 Synthetic Gear Lube (AGT), the AMSOIL MTG provides improved internal component protection. Many of these transmissions are cast iron and have exhaust pipes close to them, causing them to run hot. Increased operating temperatures can harden seals and cause oil leaks. In addition to lubricating gears, bearings and synchromesh systems, transmission oil must keep seals soft even when temperatures increase.

AMSOIL uses a unique seal additive though out the gear lube line others avoid because of costs. The premium synthetic formulation of AMSOIL Synthetic Manual Transmission and Transaxle Gear Lube is designed to specifically address the needs of these hot running transmissions.

PRODUCT DESCRIPTION
AMSOIL Synthetic Manual Transmission and Transaxle Gear Lube (MTG) is a premium blend of the finest synthetic base oils and advanced, high-performance additives. It is formulated specifically for maximum protection in the most demanding manual transmission and transaxle applications where an extreme pressure GL-4 gear lube is specified, including those where high horsepower/high torque engines and towing or heavy loads increase transmission stress.

AMSOIL MTG helps prevent the thinning effects of mechanical shear. It is formulated to maintain its viscosity and superior film strength for consistent, long-lasting wear protection. AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube excels in hot and cold temperature extremes that exceed the limits of conventional mineral oils. It protects against rust, keeps seals soft for long life, and is compatible with brass synchros for smooth synchromesh shift quality.

Note: GL-4 is a separate gear oil classification. GL-5 is not a upgrade or replacement so if your requirement is GL-4 you NEED to use a GL-4!

Ideal for NV-4500 Transmissions
AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube is a thermally stable, extreme pressure formulation that resists heat, oxidation, acid build-up and varnish. It is the ideal gear lube for high temperature applications, including the New Venture NV-4500 transmission, which retains heat due to its cast iron housing and is often subjected to heavy loads and high torque from turbo-diesel engines.

Service Life
Under normal operating conditions AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube last two times longer than conventional petroleum GL-4 gear oils. Where the original equipment manufacturer (OEM) recommends synthetic oils, follow the OEM drain interval (such as NV-4500).

 

TYPICAL TECHNICAL PROPERTIES
Synthetic Manual Transmission and
Transaxle Gear Lube 75W-90 API GL-4
(MTG)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
13.9
Kinematic Viscosity @ 40°C, cst (ASTM D-445)
87.6
Viscosity Index (ASTM D-2270)
162
Flash Point, °C (°F) (ASTM D-92) 150°C Min.
214 (417)
Pour Point, °C (°F) (ASTM D-97)
-54 (-65)
4-Ball Wear 75°C, 1200 rpm, 40kg, 1 hr.
0.40mm
Brookfield Viscosity @ -40°C
33.290
Foam Stability (ASTM D-892) (20/50/20)
0/0 20/0 0/0
Copper Corrosion (3 hr, 121°C) (ASTM D-130)
1B

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See the AMSOIL Synchromesh MTF 5W30 Manual Transmission Fluid

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