Wheel Type Tractors and their Gear Lubrication

According to  Caterpillar, transmissions of a  few  models of wheel  type  tractors  require series  3 motor oils in an  SAE  30  grade above 32 degree F  and  in an  SAE  10W   grade  for  lower  starting  atmospheric  temperatures. The  transmission  lubricant  suggested  for  most  models of  wheel  type tractors  is a multipurpose type  gear oil conforming to MIL-L-2105. An  SAE 90  grade  is  recommended for  starting  temperatures above 32 degree F and  an  SAE 80  grade  for lower  temperatures. Below -10 degree F it may be necessary to dilute this latter grade with kerosene.

The  same MIL-L-2105 type of gear oil  and like  grades  are  suggested  for all models of wheel  tractor differential  and final  drive  compartments. It is recommended that transmission oil filters be changed every   250 hours, except in the case of three models where the period is 500 hours. The  suggested  oil  change  period  for both  transmission  and differential  and final drive  compartments  of wheel  type  tractors is 1000 hours.

 Similar tractors of other makes, as well as allied equipment, such as motor grades etc., will probably require similar types and grades of gear lubricants. However, it is better to follow instructions furnished by the equipment manufacturer or supplier.