Caterpillar Diesel Engine Oil (DEO)
Caterpillar DEO has been formulated with detergents, with dispersants, and with sufficient alkalinity in order to provide superior performance in Caterpillar diesel engines. The multigrade DEO is blended in SAE 10W30 and in SAE 15W40. Use the table of lubricant viscosities to choose the correct viscosity grade that is based on ambient temperatures. Multigrade oils provide the correct viscosity for a broad range of operating temperatures and for cold engine starts. Multigrade oils are also effective in maintaining low oil consumption and low concentrations of deposits on the pistons.
For maximum performance in Caterpillar engines, CLAAS recommends the following engine oil:
- Caterpillar Diesel Engine Oil (DEO) SAE 15W40
- Caterpillar Diesel Engine Oil (DEO) SAE 10W30
Multigrade Caterpillar DEO can be used in other diesel engines and in gasoline engines. Consult the engine manufacturer's guide for the recommended specifications. Compare the engine manufacturer's specifications to the specifications of Caterpillar DEO. The current Caterpillar specifications are listed on the label and on the product data sheets.
Commercial Diesel Engine Oils
The performance of commercial diesel engine oils is based on API categories. The API categories were developed in order to provide commercial lubricants for a wide variety of diesel engines that operate at various conditions.
When a Caterpillar DEO is not used, use the following commercial oils:
- Multigrade API CG-4 (Preferred alternative)
- Multigrade API CF-4 (Acceptable alternative)
The following explanations of these API categories can be used in order to make the proper choice of a commercial oil.
CG-4 - CG-4 is the newest heavy-duty category of diesel oil. CG-4 oils can be used in Caterpillar diesel engines in place of recommended CF-4 oils. CG-4 oils provide improved cleanliness of the piston, improved viscosity control, and improved crankcase cleanliness, especially when oil soot is a problem. Although CG-4 oils were primarily developed for diesel engines that operate on 0.05 percent sulfur diesel fuel, CG-4 oils can be used with higher sulfur fuels. The new oil TBN determines the maximum fuel sulfur level for CG-4 and CF-4 oils. Make sure that the information pertaining to Total Base Number (TBN) and Fuel Sulfur Levels is read and understood. CG-4 oils are the first oils that passed tests for foam control and for viscosity shear loss. CG-4 oils must also pass recently developed tests for metal corrosion, tests for wear, and tests for oxidation.
CF-4 - CF-4 oils service a wide variety of modern diesel engines. This classification of oil was developed with 0.40 percent sulfur diesel fuel. The fuel that is used in the CF-4 tests is the type of diesel fuels that is commonly available worldwide. CF-4 oils provide improved piston deposit control and improved oil control when CF-4 oils are compared to CE oils. CF-4 oils also provide improved soot dispersancy when these oils are compared to CF oils.
Note: Single grade CF oils or multigrade CF oils are not recommended for current Caterpillar diesel engines in this machine.
Consult your CLAAS dealer for the latest oil recommendations. For viscosity information see the tables for Lubricant Viscosities.
Some commercial oils that meet the API specifications may require shortened oil change intervals. The oil change intervals are determined by monitoring the oil conditions. The oil change intervals are also determined by wear metal analysis. The Caterpillar S·O·S Oil Analysis Program is preferred.
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Failure to follow these recommendations can cause shortened engine life due to carbon deposits or excessive wear. |