Tandi's 1949 Willys-Overland Jeepster:
Lubrication Specifications
From the 1948 Willys-Overland Mechanic's Manual covering All Willys models:
48, 39, 4-40, 4-41, 4-42, CJ-2A, 463, 2WD, 4WD, and 663

This is a direct transcription of the Lubrication Specifications chart in my Willys Mechanics Manual.  All terms and descriptions are exactly as they appear in the manual.  Note that not all entries apply to all vehicles and that some vehicles have special instructions not listed here.  I have noted those differences that I am aware of.  The chart and footnotes between the lines are from the manual, the notes afterwards are added by me.



 
Unit
Type Lubricant
Winter
Summer
Chassis
Chassis 0 1
Transmission
Trans. Gear oil
80
90
Trans. Overdrive
Trans. Gear oil
80
90
Transfer Case
Trans. Gear oil
80
90
Differential Rear
Hypoid Gear Oil
90
90
Differential Front
Hypoid Gear Oil
90
90
Steering Gear
Steering Gear Oil
140
140
Wheel Bearings
Wheel Bearing Grease
2
2
Fan & Water Pump
Sealed Bearing-NONE
----------
----------
Air Cleaner - Oil Bath
Engine Oil
Same as Engine
Same as Engine
Ignition Distributor
Engine Oil
Same as Engine
Same as Engine
Generator
Engine Oil
Same as Engine
Same as Engine
Starter
Engine Oil
Same as Engine
Same as Engine
Clutch
Sealed Bearing-NONE
---------
-----------
Univ. Joints - Prop. Shaft
*Univ. Joint Lubricant
0
1
Univ. Joints - Axle Shaft
*Univ. Joint Lubricant
0
1
Univ. Joints - power Take-Off
*Univ. Joint Lubricant
0
1
Hand Brake Control
Graphite Grease
Light
Light
Overdrive Control
Graphite Grease
Light
Light
Windshield Wiper
Chassis Oil - Engine Oil
0
1
Springs
+Penetrating Oil
---------
----------
Power Take-Off Shaft Drive
Hypoid Gear Oil
80
80
Power Take-Off Pulley Drive
Hypoid Gear Oil
80
80
Governor
Engine Oil
Same as Engine
Same as Engine
Capstan Winch
Transmission Gear Oil
80
90
Engine Engine Oil See Below See Below
Above 90 deg. F use SAE 30, Not Lower than 32 deg. F use SAE 20 or 30, As Low as +10 deg. F use SAE 20W., As Low as -10 deg. F use SAE 10W.,
Below -10 deg. F use SAE 5W.


+Jeepster VJ and 463-2WD vehicles: Manual says DO NOT lubricate springs as it will destroy the neoprene rubber bushings.