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

Specifically formulated for the most demanding manual
transmission and transaxle applications
Package sizes include:

1-Quart Bottle
1-Quart Bottles (case of 12)
5-Gallon Pail
55-Gallon Drum
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 prevents the thinning effects of mechanical shear. It maintains its viscosity and superior
film strength for consistent, long-lasting wear protection. MTG 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.

Ideal for NV-4500 Transmissions
MTG 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.

AMSOIL MTG is the replacement fluid for GM part #12346190 and Chrysler part #4874459 (Chrysler
specification #MS-9070).

Ideal for Muscle Car Transmissions
The extreme pressure design of MTG reduces friction, heat and wear. It withstands the high
horsepower and quick shifts common to muscle cars equipped with large displacement engines.

Ideal for Front Wheel Drive Transaxles
The advanced synthetic formulation provides ultimate protection for gears and bearings in front wheel
drive transaxles.

Excellent for Service Centers
MTG is a versatile transmission and transaxle lubricant. It reduces inventory needs, is readily available
and is cost effective compared to vehicle OEM-branded products.

Performance Features

• Reduces friction, heat and wear
• Superior high temperature stability
• Resists heat, oxidation, acid build-up and varnish
• Lasts two times longer than conventional petroleum oils
• Improves cold weather shifting

Applications
Recommended for synchronized manual transmissions and transaxles that require 75W-85, 75W-90 or
80W-90 viscosities and any of the following performance specifications: API GL-4 and MT-1, ZF TE-ML
02B, 16A, 17A and 19A, Chrysler MS-9070, MAN 341 ML. Recommended for use in NV 4500
transmissions, and replaces GM part #12346190 and Chrysler part #4874459.

Meets GL-4 performance specifications required by some models of Acura, Hyundai, Infiniti, Kia, Land
Rover, Lexus, Mazda, Mitsubishi, Nissan, Subaru, Suzuki, Toyota, Volkswagen, Hino Mitsubishi-Fuso,
and Zetor. Ideal for muscle car transmissions such as Muncie, Borg Warner, Saginaw, Ford Toploader,
Dearborn and New Process. Also recommended for Gear Vendors Gear Splitters.

Service Life
Under normal operating conditions AMSOIL MTG will 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)
14.7
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)
84.5
Viscosity Index (ASTM D-2270)
177
Flash Point, °C (°F) (ASTM D-92) 150°C Min.
210 (410)
Pour Point °C (°F) (ASTM D-97)
-44 (-47)
Four Ball Wear Test
(ASTM D-4172B: 40 kgf, 75°C, 1200 rpm, 1 hr), Scar, mm
0.38 mm
Brookfield Viscosity @ -40°C
43.595
Foam Stability (ASTM D-892) (20/50/20)
0/0/0
Copper Corrosion (3 hr, 121°C) (ASTM D-130)
 
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