Buhler 2375, 2335, 2425, 2290, 2360 manual Ethylene Glycol Propylene Glycol, 82 F

SECTION 3 - LUBRICATION AND MAINTENANCE

EVERY 10 HOURS OR DAILY

Antifreeze must be used in any climate for both freeze and boiling point protection. Cummins Engine Company, Inc. recommends a 50% concentration level, 40% - 60% range of ethylene glycol or propylene glycol in most climates. Antifreeze at 68% concentration provides the maximum freeze protection and must never be exceeded under any condition. Antifreeze protection decreases above 68%.

	Ethylene Glycol	Propylene Glycol
40%	-23°C (-10°F)	-21°C (-6°F)
50%	-37°C (-34°F)	-33°C (-27°F)
60%	-54°C (-65°F)	-40°C (-56°F)
68%	-71°C (-90°F)	-63°C (-82°F)

NOTE: Propylene glycol antifreeze protection levels CANNOT be checked using the same hydrometer as would be used with ethylene glycol antifreeze.

You must check the concentration level using a refractometer. This tool is available from your Buhler Versatile dealer under part #FGCC2805DS. Both propylene and ethylene glycol protection levels (of a mixture of both) can be measured with the refractometer.

Once the protection level of the coolant is decided (ratio of water to antifreeze), the mixture must contain one unit of Cummins DCA4 (dry chemical additive) per gallon of coolant. A DCA unit is equal to 42.5 g (1.5 dry ounces) or120 ml (4 liquid ounces). Your Buhler Versatile dealer can assist you in obtaining the DCA4 additive.

IMPORTANT: Failure to maintain DCA4 in the cooling system will cause cooling system corrosion and engine failure.

IMPORTANT: The concentration of DCA4 should be checked with a test kit, available from Cummins and Fleetguard through your Buhler Versatile dealer.

IMPORTANT: Do not add cold coolant to a hot engine. Engine castings can be damaged. Allow the engine to cool to below 50°C (120°F).

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