The use of non-recommended supplemental coolant
IMPORTANT: ALWAYS maintain coolant at correct
additives may result in additive drop-out and gelation
level and concentration. DO NOT
of the coolant.
operate engine without coolant for
even a few minutes.
If other coolants are used, consult the coolant supplier
and follow the manufacturer's recommendation for use
If frequent coolant makeup is
of supplemental coolant additives.
required, the glycol concentration
should be checked with JT05460
See ENGINE COOLANT SPECIFICATIONS earlier in
Refractometer to assure that the
this group for proper mixing of coolant ingredients
desired freeze point is maintained.
before adding to the cooling system.
Follow manufacturer's instructions
provided with refractometer.
Add the manufacturer's recommended concentration of
supplemental coolant additive. DO NOT add more than
the recommended amount.
OPERATING IN WARM TEMPERATURE CLIMATES
Foaming, hot surface aluminum and
John Deere engines are designed to operate using
iron corrosion, scaling, and
used as the coolant, even when
Always use a recommended glycol base engine
coolant conditioners are added.
coolant, even when operating in geographical areas
where freeze protection is not required.
Drain cooling system and refill with
IMPORTANT: Water may be used as coolant in
recommended glycol base engine
emergency situations only.
coolant as soon as possible.