D346, D348 & D349 VEHICULAR ENGINES Caterpillar


Recommended Lubricants, Fuels, and Coolant

Usage:

Lubricants

The abbreviations listed below follow S.A.E. J754 nomenclature. The classifications follow S.A.E. J183 classifications. The MIL specifications are U.S.A. Military Specifications. These definitions will be of assistance in purchasing.

Engine Oils (CD)

Use oils that meet Engine Service Classification CD (MIL-L-2104C) or CD/TO-2.

Lubricating Grease (MPG)

Use Multipurpose-type Grease (MPG). NLGI No. 2 Grade is suitable for most temperatures. Use NLGI No. 1 or No. 0 Grade for extremely low temperatures.

Fuels

Use distillate fuels that conform to ASTM No. 1 or No. 2 Fuel Oil or No. 1D or No. 2D Diesel Fuel Oil. Specifications are preferred fuels and provide proven maximum engine service life.

CETANE NO. - 35 Minimum

Some crude oils and blended fuels are regarded as permissible and can be used with extra fuel filters and adjusted oil change periods. However, this will result in less than maximum engine service life.

Consult your Caterpillar dealer regarding the Caterpillar SPECIAL INSTRUCTION titled "FUELS FOR CATERPILLAR DIESEL ENGINES", FORM SEHS7067, which specifies requirements for other preferred and permissible fuels.

Fuel wax will plug the fuel filter in cold weather. Fuel cloud point should be below operating ambient temperature to avoid filter waxing and power loss.

THE % OF FUEL SULPHUR CONTENT WILL EFFECT THE OIL CHANGE INTERVAL.

Coolant

Engine Coolant

Use a mixture of fill water, antifreeze and inhibitor.

Always add inhibitor to water. Do not use plain water only.

Antifreeze

Use ethylene glycol type antifreeze. Use the correct amount to provide freeze protection to the lowest expected ambient temperature.

A methoxy propanol antifreeze can also be used. Do not use Caterpillar Cooling System Conditioner with this type of antifreeze.

Inhibitor

Use Caterpillar Cooling System Conditioner or equivalent. Add enough inhibitor to provide a 3% to 6% concentration in the coolant.

3% = approx. 1 pint to 4 gal. (1 liter to 33 liters).

6% = approx. 1 pint to 2 gal. (1 liter to 16 liters).

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