BEFORE YOU OPERATE
JH Series Operation Manual
55
ENGINE COOLANT
Engine Coolant Specifications
Note: In the U.S., LLC is required for the
warranty to be valid.
• Texaco Long Life Coolant (LLC), both
standard and premixed, product code
7997 and 7998
• Havoline Extended Life
Antifreeze/Coolant, product code 7994
Following the manufacturer’s
recommendations, use a proper LLC
which will not have any adverse effects on
the materials (cast iron, aluminum, copper,
etc.) of the engine’s cooling system.
Always use the mixing ratios specified by
the antifreeze manufacturer for the
temperature range.
Coolant (Closed Cooling System)
NOTICE
Always add LLC to soft water especially
when operating in cold weather. Never use
hard water. Water should be clean and free
from sludge or particles. Without LLC,
cooling performance will decrease due to
scale and rust in the coolant 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.
Excessive use of antifreeze also lowers
the cooling efficiency of the engine.
Never mix different types or brands of LLC,
as a harmful sludge may form. Mixing
different brands of antifreeze may cause
chemical reactions, and may make the
antifreeze useless or cause engine
problems.
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