12

Maintenance Section Lubricant Specifications

NOTICE

Failure to follow these oil recommendations can cause shortened engine service life due to deposits and/or excessive wear.

Total Base Number (TBN) and Fuel Sulfur Levels for Precombustion Chamber (PC) Diesel Engines

The TBN for a new oil depends on the fuel sulfur level of the fuel that is used. The minimum TBN of the oil that is used in PC engines must be 20 times the fuel sulfur level. The TBN is defined in “ASTM D2896”. Regardless of fuel sulfur level, the minimum TBN of new oil is five. Refer to illustration 4.

Illustration 4

g00274867

 

(Y)The TBN that is shown by “ASTM D2896”

(X)Percentages of fuel sulfur by weight

(1) TBN of new oil

(2) Change the oil when the TBN deteriorates to 50 percent of the original TBN.

Whenever the fuel sulfur exceeds 1.5 percent, do the following tasks.

•Choose an oil with the highest TBN that meets one of these classifications: EMA LRG-1, API CF, API CF-4, API CG-4, and API CH-4.

Lubricant Viscosity Recommendations for Precombustion Chamber (PC) Diesel 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 4 (minimum temperature) in order to determine the required oil viscosity for starting a cold engine.

Refer to Table 4 (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 available to meet the requirement for the temperature at start-up.

Table 4

 

Engine Oil Viscosity

 

 

 

 

 

Caterpillar DEO

 

Ambient Temperature

Multigrade

 

 

 

 

 

 

 

 

EMA LRG-1

 

 

 

 

API CH-4

 

 

 

 

API CG-4

 

Minimum

 

Maximum

API CF-4 and

 

 

 

 

 

 

API CF

 

 

 

 

Viscosity Grade

 

 

 

 

 

 

 

 

SAE 0W20

 

−40 ￿C (−40 ￿F)

 

10 ￿C (50 ￿F)

 

 

 

 

 

SAE 0W30

 

−40 ￿C (−40 ￿F)

 

30 ￿C (86 ￿F)

 

 

 

 

 

SAE 0W40

 

−40 ￿C (−40 ￿F)

 

40 ￿C (104 ￿F)

 

 

 

 

 

SAE 5W30

 

−30 ￿C (−22 ￿F)

 

30 ￿C (86 ￿F)

 

 

 

 

 

SAE 5W40

 

−30 ￿C (−22 ￿F)

 

40 ￿C (104 ￿F)

 

 

 

 

 

SAE 10W30

 

−20 ￿C (−4 ￿F)

 

40 ￿C (104 ￿F)

 

 

 

 

 

SAE 15W40

 

−15 ￿C (5 ￿F)

 

50 ￿C (122 ￿F)

 

 

 

 

 

SAE 30

 

0 ￿C (32 ￿F)

 

40 ￿C (104 ￿F)

 

 

 

 

 

SAE 40

 

5 ￿C (41 ￿F)

 

50 ￿C (122 ￿F)

 

 

 

 

 

•Shorten the oil change interval if the oil analysis dictates.

Excessive piston deposits can be produced by an oil with a high TBN. These deposits can lead to a loss of control of the oil consumption and to the polishing of the cylinder bore.

NOTICE

Operating PC engines at fuel sulfur levels over 1.0 percent may require shortened oil change intervals to maintain adequate wear protection.

i01098470

Marine Transmission Oil

SMCS Code: 3080; 3300

Caterpillar Transmission/Drive Train Oil (TDTO) is balanced in order to give maximum frictional material service life in Caterpillar transmissions.

TDTO exceeds the requirements for the Caterpillar TO-4 oil specification which includes the frictional requirements and gear wear requirements. TDTO is offered in different lubricant viscosity grades for maximum service life of components at high ambient temperatures and heavy duty cycles.