Lube Advisor

MAG 1® TO-4 Torque Fluid SAE 30

Agriculture & Construction Equipment Automatic Transmission Products

MAG 1 TO-4 Torque Fluid SAE 30 is a multipurpose lubricant designed for use in transmissions, wet brakes and hydraulic systems requiring a fluid meeting Caterpillar® TO-4 requirements. This fluid has outstanding hydraulic oil stability and allows protection against high-pressure pump wear. It provides the following benefits:

  • Low operational cost.
  • Smooth operation. 
  • Long oil life. 

Protection for Today’s Driveline Designs

Drivelines have evolved dramatically, requiring highly specialized fluids for unique applications. One brand has evolved right alongside – MAG 1®. Only the most advanced driveline fluids meet the difficult challenges of effectively balancing performance, strength and durability. 

Featuring MAG 1® with FMX® Technology – Friction Management for Xtreme protection™.  It’s designed to provide unsurpassed protection and performance.


  • Allows optimal operation in a wide range of applications and operating temperatures.


  • Provides a strong oil film to avoid metal-to-metal contact between rotating parts, which prevents wear and extends equipment life.


  • Protects against rust, performs well with the presence of some water, and has excellent thermal and oxidation stability. 


  • Designed for use with transmissions, wet brakes, torque converters, and hydraulic systems requiring a fluid meeting C-4 or TO-4 requirements is recommended.

Industry/OEM Specifications

Allison C-4 Meets Requirements
CAT TO-4 Meets Requirements
Vickers Meets Requirements
ZF TE-ML 03C Meets Requirements
CAT TDTO Suitable for Use
CAT TO-2 Suitable for Use

Typical Properties

Color ASTM D1500 5.0
Flash Point °C ASTM D92 216
Flash Point °F ASTM D92 420
Gravity, °API ASTM D287 27.74
Specific Gravity @ 60°F (15.6°C) ASTM D4052 0.8886
Viscosity @ 100°C cSt ASTM D445 11.87
Viscosity @ 40°C cSt ASTM D445 106.6
Viscosity Index ASTM D2270 100

Container/Bulk Availability

5 Gallon Pail Product Number - 65845
330 Gallon Tote Product Number - 65585
55 Gallon Drum Product Number - 62858
Available in Bulk