Transmission Fluids
Product Data
castrol.com/GPS
800 255 4417
May 2025
GPS
Castrol
®
Transmax
®
Manual E Long Life 40
Castrol Transmax Manual E Long Life 40 is a specially formulated synthetic
lubricant designed for fuel efficiency, extended drain intervals and severe
service in heavy duty commercial vehicle transmissions requiring a non-EP
transmission lubricant. It is formulated to protect higher torque transmissions
coupled with increased horsepower engines and is approved for use in Eaton
transmissions such as Ultrashi Plus, Fuller Advantage, FR and RT Series.
Features and Benefits
Castrol Transmax Manual E Long Life 40 offers the following advantages:
• Proven to provide better fuel economy versus other PS 164 transmission fluids
• High performance and extended drain capabilities
• Excellent thermal and oxidation stability, which resists deposit and sludge formation
• Outstanding protection from corrosion, foaming, rust, and wear
• Superb high and low temperature performance
• Friction retention, friction durability, and excellent shear stability to ensure and maintain smooth
transmission operations throughout the extended drain interval
• Formulated to reduce sump operating temperatures
Industry Specifications and OEM Approvals
• API Category MT-1
• Eaton PS-386
• Mack TO-A Plus
• Meritor O-81
• Navistar MPAPS B-6816 Type II
Typical Properties
Test Method Units Typical Results
Density @ 15.6° C ASTM D1298 kg/m3 0.850
Viscosity, Kinematic 100° C ASTM D445 cSt 14.8
Viscosity, Kinematic 40° C ASTM D445 mm²/s 95.1
Viscosity Index ASTM D2270 None 163
Viscosity, Brookfield @ -40° C (75W) ASTM D2983 mPa.s (cP) 51900
Flash Point, COC ASTM D92 °C 238
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