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TO4 SAE50 Oil Equivalent — Brand Comparison & Cross Reference

Caterpillar TO-4 SAE 50 is a heavy-grade transmission oil for high-temperature applications. Used in final drives and transmissions operating under extreme loads in mining, quarrying, and heavy construction.

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Brand Comparison Table

The following table shows the TO4 SAE50 equivalent product from each major lubricant brand. Use this to find a direct substitute when switching suppliers or sourcing alternatives.

BrandProduct Name
Sinopec logoSinopec
TO450
Castrol logoCastrol
Transmax offroad 50
Mobil logoMobil
Mobiltrans HD 50
Shell logoShell
Spirax S4 CX 50
Valvoline logoValvoline
Valtorque C4 50
Caltex logoCaltex
Delo TorqForce 50
Fuchs logoFuchs
Titan UTTO TO-4 50
Penrite logoPenrite
Convoy Fleetgear 50
Gulf Western logoGulf Western
Torque Oil TO-4 50

Common Applications

  • High-temperature final drive applications
  • Mining truck transmissions in hot climates
  • Heavy-load dozer and loader final drives
  • Quarry equipment operating under extreme loads
  • Caterpillar specified drivetrain components

Frequently Asked Questions

When should I use TO-4 SAE 50 instead of SAE 30?

SAE 50 is recommended for final drives and transmissions operating in high ambient temperatures or under extreme loads. SAE 30 is typically used for transmissions and hydraulic systems in moderate climates. Consult the equipment manual for the correct grade.

Is TO-4 SAE 50 the same as gear oil?

No. TO-4 oils are specifically formulated for Caterpillar transmissions and final drives with specific friction requirements. Standard gear oils (GL-4, GL-5) have different additive packages and should not be used where TO-4 is specified.

Can I mix TO-4 SAE 30 and SAE 50?

While both are TO-4 specification oils and technically compatible, mixing viscosity grades is not recommended as it produces an unpredictable viscosity. Use the grade specified by the equipment manufacturer for each compartment.

Related Transmission Specifications

TO4 SAE30FD-1 60JDM J20CTO4 SAE10WAllison ATF 295Allison ATF 66802L

Related Articles

Industrial Lubricant Cross Reference Guide for 2026Read article →Oil Cross Reference Tool: Find the Right Lubricant Equivalent InstantlyRead article →

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