Engine Coolant; Engine Coolant Specifications - Yanmar BY Series Service Manual

Engine Coolant

ENGINE COOLANT
A
DANGER
SCALD HAZARD!
• NEVER remove the coolant filler cap if
the engine is hot. Steam and hot
engine coolant will escape and
seriously burn you. Allow the engine
to cool before attempting to remove
the filler cap.
• Securely tighten the filler cap after
checking the coolant level. Steam can
escape during engine operation if the
cap is loose.
• Failure to comply will result in death or
serious injury.
A
CAUTION
COOLANT HAZARD!
• Wear eye protection and rubber gloves
when you handle Long Life engine
coolant. If contact with the eyes or
skin should occur, flush eyes and
wash immediately with clean water.
• Failure to comply may result in minor
or moderate injury.
BY Service Manual
GENERAL SERVICE INFORMATION
• Only use the engine coolant specified.
• Prevent dirt and debris from
• NEVER mix different types of engine

Engine Coolant Specifications

Note: In the U.S., LLC is required for the
Engine Coolant Mixture
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Always add LLC to deionized soft
water - especially when operating in cold
weather. Without LLC, cooling performance
will decrease due to scale and rust in the
cooling system. Water alone may freeze
and form ice; it expands approximately 9%
in volume.
Use the proper amount of coolant
concentrate for the ambient temperature as
specified by the LLC manufacturer. LLC
concentration should be a minimum of 30%
to a maximum of 60%. Too much LLC will
decrease the cooling efficiency.
Do not mix different types or brands of LLC
or a harmful sludge may form.
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Do not use hard water. Use deionized water.
CAUTION
Other engine coolants may affect
warranty coverage, cause an internal
buildup of rust and scale and / or
shorten engine life.
contaminating the engine coolant.
Carefully clean the radiator cap and
the surrounding area before you
remove the cap.
coolants. This may adversely affect the
properties of the engine coolant.
warranty to be valid.
IMPORTANT
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