HOUSING AS-REAR AXLE 2359747 - Caterpillar

Use Caterpillar Antifreeze or GM Specification 6038-M Antifreeze. Caterpillar Antifreeze is available through your Caterpillar dealer in quantities that follow. Most commercial antifreezes are formulated for gasoline engine applications and, therefore, have high silicate content. Caterpillar Antifreeze is formulated with a low silicate content and the proper coolant additives for heavy duty diesel engines.GM Specification 6038-M is a low silicate antifreeze, but supplemental coolant additive must be added.The major advantages of Caterpillar Antifreeze are:* Significantly reduces water pump seal leakage problems caused by excessive concentration of chemical additives.* There is no need to add supplemental coolant additive on initial fill which must be done with current commercially available antifreezes.* High silicate antifreezes used with a supplemental coolant additive can cause a build up of solids over a period of time which can cause plugging, loss of heat transfer, and water pump seal damage. Make proper antifreeze additions.Adding pure antifreeze as a makeup solution for cooling system top-off is an unacceptable practice. It increases the concentration of antifreeze in the cooling system which increases the concentration of dissolved solids and undissolved chemical inhibitors in the cooling system. Add antifreeze mixed with water to the same freeze protection as your cooling system.Use the chart below to assist in determining the concentration of Caterpillar Antifreeze to use. Supplemental Coolant Additive
Supplemental coolant additive is necessary to prevent rust, scale, pitting and/or corrosion of engine parts that coolant comes in contact with. Most antifreeze solutions DO NOT contain sufficient supplemental coolant additive.
Always add supplemental coolant additive or equivalent to the coolant, or install a Caterpillar supplemental coolant additive element (if equipped). Never use coolant only, except if Caterpillar Antifreeze is being used which contains the additive. In this case, no supplemental coolant additive is needed on initial fill, but is necessary on a maintenance basis.Use supplemental coolant additive or a supplemental coolant additive element (if equipped). This provides a 3 to 6 percent concentration in the cooling system to help prevent corrosion.To prevent overinhibiting the engine's cooling system, never use both the liquid supplemental coolant additive and the supplemental coolant additive element (if equipped) at the same time. The use of the additives together could result in excessive concentration that would exceed the Caterpillar recommended maximum of 6 percent.Excessive concentration of an additive can form deposits on the higher temperature surfaces of the cooling system and create a barrier that reduces the engine's heat transfer characteristics. Reduced heat transfer could cause cracking of the cylinder head and other high temperature components. Excessive concentrations of additive could also accelerate water pump seal wear.Supplemental coolant additive is needed when not using Caterpillar Antifreeze for premixed coolant solution.
Liquid supplemental coolant additive can be purchased from your Caterpillar dealer. Follow the instructions on the container.
DO NOT add supplemental coolant additive at initial fill when using Caterpillar Antifreeze. Caterpillar Antifreeze contains the necessary supplemental coolant additive precharge. Addition of supplemental coolant additive could result in an overconcentration.
On initial fill of a new or reconditioned engine if Caterpillar Antifreeze