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Cat Fluids
Cat fluids have been developed and tested by Cat in order to increase the performance and the life of Cat components. The quality of finished oil is dependent on the quality of the base stock, the quality of the additives, and the compatibility of the base stock and additives. Cat fluids are formulated of high quality refined oil base stocks and additives of optimal chemistry and quantity in order to provide high performance in engines and components. Cat fluids are used for factory fill of Cat engines and components. These fluids are offered by Cat dealers for service fills and as aftermarket products. Consult with your Cat dealer for more information on these Cat fluids.Cat recommends the use of the following Cat fluids for Gas engines:
Table 1
Caterpillar® Lubricants Viscosity Grade
Cat Natural Gas Engine Oil Ultra 40Next Generation High Performance NGEO NGEO Ultra 40 SAE 40
Cat Natural Gas Engine Oil Advanced 40Premium Performance NGEO NGEO Advanced 40 SAE 40
Cat Natural Gas Engine Oil EL350(1)
Premium Performance NGEO, Limited regional availability NGEO EL350 SAE 40
Cat Natural Gas Engine OilHigh Quality NGEO, Limited regional availability NGEO 40 SAE 40
Hydraulic Oil Cat HYDO Advanced SAE 10W
SAE 20W
Cat Bio HYDO
Advanced (HEES) SAE 30
ISO 46 Multigrade
(1) Cat NGEO EL350 replaced Cat NGEO EL250
Table 2
Caterpillar Grease and Coolant Products
Grease Cat Utility Grease
Cat Prime Application Grease
Cat Extreme Application Grease
Cat Extreme Application Grease - Desert
Cat Extreme Application Grease - Arctic (Semi-Synthetic)
Cat Ball Bearing Grease
Cat White Assembly Grease
Cat Hammer Paste
Coolants Cat NGEC (Natural Gas Engine Coolant)
Cat DEAC (Diesel Engine Antifreeze/Coolant)
Cat SCA (Supplemental Coolant Additive) for use with Cat DEAC Note: Cat fluids availability will vary by region.Always consult with the OMM of your engine to determine the recommended oil for your specific engine model.Always consult your Cat dealer in order to ensure thatyou have the current revision level of this publication.Note: The optimal application of the lubricants is dependent on the oil quality and the maintenance practices such as contamination control, tank management, and general handling practices.Engine Oil
Engine lubricants play multiple roles in engines. Appropriate lubricants offer the following:
Provides lubrication to the moving components of the engine under a wide range of temperatures
Keeps the engine components clean and removes wear debris
Removes heat from the lubricated components
Neutralize acidic products due to combustion process
Protect the engine from cavitation
Protect the engine from corrosion and rust
Control oil consumption
Disperse/Solubilize contaminants (soot)Engines that use gaseous fuel require oils that are formulated with additives that are specific to these engines. There are no industry standards that define the performance specifications of oils for these engines. Field evaluations must be used in order to determine oils that are acceptable. To aid in oil selection, guidelines are provided in this Special Publication.The following costs are associated with maintenance of the engine lubrication system:
Initial fill
Consumption
Analysis of the engine oil
Replacement of the engine oil and engine oil filter
Disposal of the used engine oilMaintaining the engine lubrication system is usually between 10 and 20 percent of the total cost of the engine maintenance. This percentage can be affected by the type of fuel, the engine duty cycle, and the maintenance practices.The temperature of the cooling system, extended operation at light loads, and the condition of the engine (wear) have an effect on the rate of consumption and on the engine oil service life.Maintenance costs can be greatly increased by the wrong engine oil. Inadequate lubrication that destroys moving parts causes expensive unscheduled down time. The following problems can result from the use of incorrect engine oil:
Buildup of varnish (glazing) in the cylinder liners
Damage to bearings
Deposits on the valves that can lead to guttering of the valves
Oil coking in the turbocharger
Piston rings and valves that stickIn order to achieve the lowest maintenance costs for the lubrication system, use the recommended and preferred Cat natural gas engine oils.Hydraulic Oil
For information on hydraulic oil, see this Special Publication, "Hydraulic Oil" topic.Lubricating Grease
For information on grease, see this Special Publication, "Lubricating Grease" topic.