COVER-TRANSMISSION 6Y5726 - Caterpillar

The lubricants recommended for use in this hydraulic control can be identified by the sub-headings preceding their descriptions that follow: The proper selection of oil and SAE grade of oil can be made from the information in the topic, TYPE OF LUBRICANTS AND SAE GRADES TO USE.Crankcase Lubricating Oils
Superior Lubricants (Series 3): These are additive type oils that have been identified as meeting a rigid, high quality standard and certified for use in all Caterpillar diesel engines. See your Caterpillar dealer for brand names of products conforming to this specification. MIL-L-2104A or MIL-L-2104B Specification Oils: These oils are additive type but are milder than Superior Lubricants (Series 3) Oils. They can be used as specified satisfactorily. Your oil supplier is familiar with those oils meeting the MIL-L-2104A or MIL-L-2104B Specification.Type of Lubricants and SAE Grades to Use
The grade of oil is classified in terms of viscosity (fluidity or flow ability) and is identified with numbers called SAE numbers. The lower SAE numbers are more fluid and flow more readily than do those with the higher numbers.To determine if the oil in the hydraulic control will flow in cold weather, remove the oil filler cap and dip a clean rod into the oil before starting, and if the oil will flow off, the oil is fluid enough to circulate properly.The oil in the hydraulic system should be drained and replaced with undiluted SAE 10W oil at the end of the cold season when dilution of the oil is no longer required.Lubricating Grease
Multipurpose-Type Grease: This lubricant is a mixture of mineral oil and metallic or non-metallic thickeners.Use NLGI No. 2 Grade for most temperatures. For extremely low temperatures, use NLGI No. 0 or No. 1 Grade.This grease can be applied to all points, such as chassis, wheel bearing, universal joint and other miscellaneous applications.