LUBRICANT SPECIFICATIONS Oil Changes 24 hours but before 100 hours of service have elapsed. Refilling CAUTION Remove all dirt around filler plug. Refill with new oil of the grade recommended for the existing season and prevailing service. Fill to the bottom of the level testing plug positioned on the side of the transmission. Do not overfill the transmission. Overfilling usually results in oil breakdown due to excessive heat and aeration from the churning action of the gears. Early breakdown of the oil will result in heavy varnish and sludge deposits that plug up oil ports and build up on the splines and bearings. Overflow of oil can also escape onto clutch or parking brakes.
When adding oil, do not mix different types of oil. When adding oil, types and brands of oil should not be intermixed be- cause of possible incompatibility, which could decrease the effec- tiveness of the lubrication or cause component failure. 5 An initial oil change and flush should be performed after the transmission has been placed in actual service. This change should be made any time after 3000 miles (4800 km) but never longer than 5000 miles (8000 km) of over-the-road service.
In off-highway use, the change should be made after (03/17) Y53-6077-1B1 5-51 Type Grade (SAE) Ambient Temperature Synthetic Engine Oil meeting MIL-L-2104D or MIL-L-46152B, API-SF or API-CD CD50 CD30 All *Synthetic Gear Oil Meeting MIL-2105C or API-GL5 EP75W90 EP75W140 All *EP Gear Oils are not recommended when lubricant operating temperatures are above 230° F (110° C).