The Original Synthetic Motor Oil

New Oils Provide
Maximum Protection for
Manual Transmissions - Transaxles

Transmissions and transaxles are an assembly of gears and shafts designed to transmit power to the drive wheels of vehicles. Power from the engine is provided in the form of torque, or twisted force. The amount of this force varies a great deal, depending on the individual characteristics of the engine and the speed at which the engine is running.

When the driver shifts a manual transmission of transaxle, some gears disengage and others engage inside the transmission. However, these gears are moving at different speeds and could grind during shifting. Synchromesh components are used to resolve this possible gear-grinding situation. A synchromesh system equalizes the speed of each gear for smooth shifting without gear grinding.

Some older manual transmissions do not have synchronizers, requiring them to be "double clutched." The statement "If you cannot find 'em, grind 'em" typically applies to non-synchromesh transmissions common to older cars, school busses and heavy-duty equipment.

Proper lubrication is essential and plays a vital role in manual transmissions and transaxles. The fluid must reduce gear and bearing wear as well as provide smooth synchromesh engagements. Smooth shifting reduces "bumpshifts," which occur when the shift lever bumps back out of gear. Smooth shifting also minimizes gear grinding and extends transmission life.

New AMSOIL Manual Transmission/Transaxle Oils 75W-90 (MTG) and 5W-30 (MTF) meet and exceed the gear, bearing, synchromesh and seal demands found in automobiles and light trucks.

AMSOIL Synthetic 75W-90 Manual Transmission and Transaxle Gear Lube (MTG) is designed to meet the special requirements of certain manual transmissions and transaxles, such as the New Venture NV 4500. It is designed to replace AMSOIL 80W-90 Synthetic Gear Lube (AGT) and provide improved internal component protection. 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. 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

Synthetic 75W-90 Manual Transmission and Transaxle Gear Lube (MTG) is formulated with extreme pressure (EP) additives and advanced synchromesh qualities that provide smooth shifts while protecting gears, bearings and seals. It is not corrosive to yellow metals, such as copper, that are used in some synchromesh systems. Synthetic 75W-90 Manual Transmission and Transaxle Gear Lube (MTG) provides the maximum transmission and transaxle internal component protection.

Synthetic 75W-90 Manual Transmission and Transaxle Gear Lube (MTG) is recommended for synchronized manual transmissions and transaxles that require 75W-85, 75W-90 or 80W-90 API GL-4 gear lube. It is recommended for use in NV 4500 transmissions and replaces GM part # 12346190 and Chrysler part # 4874459 (Chrysler specification MS-9070). Synthetic 75W-90 Manual Transmission and Transaxle Gear Lube (MTG) meets GL-4 performance specifications required by some models of Acura, Hyundai, Infiniti, Kia, Land Rover, Lexus, Mazda, Mitsubishi-Fuso and Zetor. It is ideal for muscle car transmissions, including Muncie, Borg Warner, Saginaw, Ford Toploader, Dearborn and New Process.

AMSOIL Synthetic 5W-30 Synchromesh Transmission Fluid (MTF) is specifically designed for manual transmissions and transaxles with synchromesh systems that require light viscosity, non-extreme pressure fortified oil. It is formulated with advanced additive technology to provide proper friction characteristics for smooth shifting without grinding or bump shifting, while providing the ultimate in gear and bearing protection, MTF provides far better protection in these manual transmissions than motor oils and is the recommended replacement for AMSOIL Series 3000 Synthetic 5W-30 Heavy Duty Diesel Oil (HDD) in transmission applications.

AMSOIL Synthetic 5W-30 Synchromesh Transmission Fluid (MTF) outperforms conventional oils and protects internal components at extreme temperatures from -40°F to 300°F. It controls the thinning effects of mechanical shear for stable viscosity and superior film strength, providing better anti-wear performance than conventional oils.

AMSOIL Synthetic 5W-30 Synchromesh Transmission Fluid (MTF) contains friction modifiers for superior synchronizer compatibility and smooth shifting. It is non-corrosive to yellow metals, and its outstanding anti-wear properties protect gears and bearings under severe duty. Synthetic 5W-30 Synchromesh Transmission Fluid (MTF) is anti-foam fortified and contains oxidation inhibitors to resist high temperatures, oxidation, acid buildup and varnish deposits.

AMSOIL Synthetic 5W-30 Synchromesh Transmission Fluid (MTF) is recommended for automotive and light truck applications that require synchromesh transmission fluid. Applications include manual transmissions and transaxles such as New Venture NV T350, NV 1500, NV 3500, NV 3550, MV 5600 and Termec T-4, T-5, T-18 and T-176. MTF is a SAE 5W-30, however, it is not for use in engines or wet clutches.

AMSOIL Synthetic 5W-30 Synchromesh Transmission Fluid (MTF) replaces GM part # 1234349, 12345577, 12377916 and 1052931 as well as Chrysler part # 4874464 and 4874465. It meets GM specifications 9985648, 9986105 and 9986535 and Chrysler MS-9224 and MS-9417.