527 Track-Type Skidder Caterpillar

The minimum outside temperature determines the proper oil viscosity for starting and operating the machine. In order to determine the proper oil viscosity grade, refer to the "Min" column in the table. This information reflects the coldest ambient temperature condition for starting a cold machine and for operating a cold machine. Refer to the "Max" column in the table in order to select the oil viscosity grade for operating the machine at the highest temperature that is anticipated. Use the highest oil viscosity that is allowed for the ambient temperature when you start the machine.

Machines that are operated continuously should use oils that have the higher oil viscosity in the final drives and in the differentials. The oils that have the higher oil viscosity will maintain the highest possible oil film thickness. Consult your dealer if additional information is needed.

Table 1

Lubricant Viscosities for Ambient Temperatures
Compartment or System	Oil Type and Classification	Oil Viscosities	°C		°F
			Min	Max	Min	Max
Final Drive Differential Gearboxes	Caterpillar TDTO Caterpillar TO-4 Caterpillar TO-4M	SAE 0W20 (1)	-40	0	-40	32
		SAE 0W30 (1)	-40	10	-40	50
		SAE 5W30 (1)	-30	10	-22	50
		SAE 10W	-30	0	-22	32
		SAE 30	-25	25	-13	77
		SAE 50	-15	50	5	122
		SAE 60	-10	50	14	122
		TMS (2)	-30	25	-22	77
Final Drive Differential Gearboxes Manual Transmissions (Gear Oil)	Caterpillar GO API GL-5	SAE 75W90	-30	40	-22	104
		SAE 80W90	-20	40	-4	104
		SAE 85W140	-10	50	14	122
		SAE 90	0	40	32	104

( 1 )	First choice: Oils of full synthetic base stock without viscosity index improvers that meet the performance requirements of the TO-4 specification for the SAE 30 viscosity grade. Typical lubricant viscosity grades are SAE 0W20, SAE 0W30, and SAE 5W30. Second Choice: Oils that contain a TO-4 additive package and a lubricant viscosity grade of SAE 0W20, SAE 0W30, or SAE 5W30.
( 2 )	TMS Transmission Multi-Season

Table 2

Lubricant Viscosities for Ambient Temperatures
Compartment or System	Oil Type and Classification	Oil Viscosities	°C		°F
			Min	Max	Min	Max
Engine Crankcase	Caterpillar Multigrade DEO Multigrade CH-4 APIMultigrade CG-4 APIMultigrade CF-4	SAE 0W20	-40	10	-40	50
		SAE 0W30	-40	30	-40	86
		SAE 5W30	-30	30	-22	86
		SAE 5W40	-30	40	-22	104
		SAE 10W30	-20	40	-4	104
		SAE 15W40	-15	50	5	122
Power Shift, Manual Transmissions, and Winches	CaterpillarTDTO Caterpillar TO-4 Caterpillar TO-4M	SAE 0W20 (3)	-40	10	-40	50
		SAE 0W30 (3)	-40	20	-40	68
		SAE 5W30 (3)	-30	20	-22	68
		SAE 10W	-20	10	-4	50
		SAE 30	0	35	32	95
		SAE 50	10	50	50	122
		TMS (1)	-10	35	14	95
Hydraulic Systems	Caterpillar HYDO Caterpillar DEO Caterpillar TDTO Caterpillar MTO API CG-4 API CF-4 API CF Caterpillar TO-4 Caterpillar TO-4M	SAE 0W20	-40	40	-40	104
		SAE 0W30	-40	40	-40	104
		SAE 5W30	-30	40	-22	104
		SAE 5W40	-30	40	-22	104
		SAE 10W	-20	40	-4	104
		SAE 30	10	50	50	122
		SAE 10W30	-20	40	-4	104
		SAE 15W40	-15	50	5	122
		Caterpillar MTO	-25	40	5	104
		Biodegradable Hydraulic Oil (HEES) (2)	-25	43	-13	110
		TMS (1)	-15	50	5	122
Swing Drive, Recoil Spring, Track Roller Frame Pivot Bearings and Idlers	Caterpillar TO-4 Caterpillar TDTO Caterpillar TO-4M	SAE 0W20 (3)	-40	0	-40	32
		SAE 0W30 (3)	-40	10	-40	50
		SAE 5W20 (3)	-35	0	-31	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
		TMS (1)	-25	25	-13	77

( 1 )	TMS Transmission Multi-Season
( 2 )	For Biodegradable Hydraulic Oils (HEES), tank temperatures should not exceed 100°C (212°F). Do not use Biodegradable Hydraulic Oils (HEES) in hydraulic systems with clutches or brakes. Do not use Biodegradable Hydraulic Oils (HEES) in machine hydraulic systems with jacket water cooling systems such as large track-type tractors or off-highway trucks.
( 3 )	First Choice: Oils of full synthetic base stock without viscosity index improvers that meet the performance requirements of the TO-4 specification for the SAE 30viscosity grade. Typical SAE viscosity grades are SAE 0W20, SAE 0W30, and SAE 5W30. Second Choice: Oils with a TO-4 type of additive package and a lubricant viscosity grade of SAE 0W20, SAE 0W30, or SAE 5W30.