10

Maintenance Section Lubricant Specifications

Lubricant Viscosity

Recommendations (3116 and

3126 Marine Engines)

The proper SAE viscosity grade of oil is determined by the minimum ambient temperature during cold engine start-up, and the maximum ambient temperature during engine operation.

Refer to Table 3 (minimum temperature) in order to determine the required oil viscosity for starting a cold engine.

Refer to Table 3 (maximum temperature) in order to select the oil viscosity for engine operation at the highest ambient temperature that is anticipated.

Generally, use the highest oil viscosity that is allowed for the ambient temperature at start-up.

Table 3

Engine Oil Viscosity

API CF-4 Oil

Ambient Temperature

 

 

Viscosity Grade

Minimum

Maximum

 

 

 

 

SAE 30

0 ￿C (32 ￿F)

40 ￿C (104 ￿F)

 

 

 

SAE 40

5 ￿C (41 ￿F)

50 ￿C (122 ￿F)

 

 

 

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Caterpillar multigrade Diesel Engine Oil is available in two viscosity grades (10W30 and 15W40). For precombustion chamber engines, see Table 4 in order to choose the correct viscosity grade for the ambient temperature. Multigrade oils provide the correct viscosity for a broad range of operating temperatures.

Multigrade oils are effective in maintaining low oil consumption and low levels of piston deposits.

Caterpillar multigrade Diesel Engine Oil can be used in other diesel engines and in gasoline engines. See the engine manufacturer’s guide for the recommended specifications. Compare the specifications to the specifications of Caterpillar multigrade Diesel Engine Oil. The current industry standards for Caterpillar Diesel Engine Oil are listed on the product label and on the data sheets for the product.

Consult your Caterpillar dealer for part numbers and for available sizes of containers.

Commercial Oils

The performance of commercial diesel engine oils is based on American Petroleum Institute (API) classifications. These API classifications are developed in order to provide commercial lubricants for a broad range of diesel engines that operate at various conditions.

Engine Oil for Precombustion Chamber (PC) Diesel Engines

SMCS Code: 1348

If Caterpillar multigrade Diesel Engine Oil is not used, only use commercial oils that meet the following classifications:

•EMA LRG-1 multigrade oil (preferred oil)

Caterpillar Diesel Engine Oil

Caterpillar Oils have been developed and tested in order to provide the full performance and service life that has been designed and built into Caterpillar Engines. Caterpillar Oils are currently used to fill diesel engines at the factory. These oils are offered by Caterpillar dealers for continued use when the engine oil is changed. Consult your Caterpillar dealer for more information on these oils.

Due to significant variations in the quality and in the performance of commercially available oils, Caterpillar makes the following recommendations:

•Caterpillar Diesel Engine Oil (10W30)

•Caterpillar Diesel Engine Oil (15W40)

•API CH-4 multigrade oil (preferred oil)

•API CG-4 multigrade oil (preferred oil)

•API CF-4 multigrade oil (acceptable oil)

•API CF oil (acceptable oil for PC engines)

In order to make the proper choice of a commercial oil, refer to the following explanations:

Caterpillar multigrade Diesel Engine Oil is formulated with the correct amounts of detergents, dispersants, and alkalinity in order to provide superior performance in Caterpillar Diesel Engines.