Lubricant Viscosities
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| Recommended Lubricant Viscosities for Ambient Temperatures(1) | |||||
|---|---|---|---|---|---|
| Compartment or System | Oil Viscosities | °C | °F | ||
| Min | Max | Min | Max | ||
| Engine Crankcase
CH-4 |
SAE 10W30 | −20 | +40 | −4 | +104 |
| SAE 15W40 | -15 | +50 | +5 | +122 | |
| Hydraulic Systems
HYDO |
SAE 5W20 (SPC)(2) | −30 | +40 | −22 | +104 |
| SAE 5W20 | −25 | +10 | −13 | +50 | |
| SAE 10W | −10 | +37 | +14 | +99 | |
| SAE 10W30 | −5 | +50 | +23 | +122 | |
| SAE 15W40 | +4 | +50 | +39 | +122 | |
| SAE 30 | +10 | +50 | +50 | +122 | |
| Differentials and Final Drives
TO-4 or TDTO |
SAE 5W20 (SPC)(2) | −30 | 0 | −22 | +32 |
| SAE 10W | −30 | 0 | −22 | +32 | |
| SAE 30 | −20 | +25 | −4 | +77 | |
| SAE 40 | −10 | +40 | +14 | +104 | |
| SAE 50 | 0 | +50 | +32 | +122 | |
| Transmission and Pump Drive | SAE 75W-140(3) | −20 | +40 | −4 | +104 |
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| (1) | When you are operating the machine in temperatures below |
| (2) | These special oils that contain synthetic base stocks do not contain polymer viscosity index improvers. The high viscosity index of the"synthetic" oils provide natural multiviscosity properties. |
| (3) | When the use of gear oil is specified, use Cat GO or Cat Synthetic GO in order to maximize the component life. |
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