SAE 50 Long-Life Synthetic Transmission Oil (FTF)
Specifically Engineered for 500,000-Mile Service Life in Over-The-Road Trucks.
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AMSOIL SAE 50 Long-Life Synthetic Transmission Oil is specially formulated to meet the demanding
requirements of manual transmissions found in high-torque, heavy-duty line-haul trucks and other commercial
applications. Its synthetic base stocks and premium additives help reduce gear and bearing wear (see photos),
improve shifting and extend transmission life throughout drain intervals of up to 500,000 miles/five years.
Compared to conventional fluids, Long-Life Synthetic Transmission Oil can help operators reduce maintenance
costs and increase productivity.
AMSOIL Long-Life Synthetic Transmission Oil’s high viscosity index translates into better high- and low-temperature
performance compared to conventional fluids. In cold weather, it provides easier shifts and reduced fluid drag for
increased fuel economy. Its exceptional thermal stability inhibits chemical breakdown and sludge formation at high
operating temperatures to help transmissions run cleaner.
AMSOIL Long-Life Synthetic Transmission Oil’s synthetic base oils withstand the pressures of high-load, high-torque
applications. As a result, it resists viscosity loss due to mechanical shear to provide a durable lubricating fluid
film for increased wear resistance and longer transmission life.
To prove its effectiveness, AMSOIL installed SAE 50 Long-Life Synthetic Transmission Oil in
line-haul trucks and placed them into real-world service.
After 500,000 miles, a transmission was disassembled and inspected by a calibrated ASTM rater.
Results reveal Long-Life Synthetic Transmission Oil provided outstanding wear protection in all critical
components. Examples include the input shaft main drive gear and output shaft bearing, which both earned high
merit scores of 8 out of a possible 10 for wear. In addition, both components showed no scuffing, spalling or
corrosion, scoring perfect 10s in all areas.
Churning gears introduce air into the fluid, causing foam. When bubbles between gear surfaces collapse,
metal-to-metal contact and increased wear result. Long-Life Synthetic Transmission Oil contains foam inhibitors to
ensure formation of a strong lubricating film and excellent wear protection.
Long-Life Synthetic Transmission Oil is compatible with seals to help prevent leaks and extend seal life.
AMSOIL SAE 50 Long-Life Synthetic Transmission Oil is excellent for use in manual transmissions requiring an SAE 50
lubricant found in heavy-duty equipment. It is recommended for applications specifying any of the following:
• Eaton PS-164 Rev. 7
• API GL-1 and MT-1
• Navistar/International TMS 6816
• Rockwell/Eaton/Fuller CD-50 (PS-081)
• Mack TO-A Plus
• Volvo I-Shift
• ZF Freedomline
• Meritor 0-81
Follow the OEM drain interval for synthetic oil up to 500,000 miles or five years, whichever comes first.
Health & Safety
For recommendations on safe handling and use of this product, please refer to the Material Safety Data Sheet
(MSDS), which is available upon request through the AMSOIL sales office at (715) 395-0946.
For AMSOIL Warranty information, visit www.amsoil.com/warranty.aspx.
|TYPICAL TECHNICAL PROPERTIES
|SAE 50 Long-Life Synthetic Transmission Oil (FTF)
|Viscosity 100°C, cSt (ASTM D-445)
|Viscosity 40°C, cSt (ASTM D-445)
|Viscosity Index (ASTM D-2270)
|Specific Gravity (g/ml)
|Flash Point, °C (°F) (ASTM D-92)
|Fire Point, °C (°F) (ASTM D-92)
|Pour Point, °C (°F) (ASTM D-97)
|Four-Ball Wear Test (ASTM D-4172)
Para 1 (75°C, 1200 rpm, 40 kg, 1 hr)
|Brookfield Viscosity -40°C (cP)(ASTM D-2983)
|Foam Tendency (ASTM D-892)
0/0, 0/0, 0/0
|Copper Corrosion, 121°C, 3Hr (ASTM D-130)
|60-Hour KRL (% Vk100 loss) (CEC L-45-A-99)