Kadey-Krogen Yachts 5814, Owner'S Manual, Page: 169 / 449

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www.kadeykrogen.com
Subject to change without notice.
Krogen 58’ Manual, Hull 58014 Propulsion System – Engines and Transmission
151
Water Quality
Water quality is important to the performance of the cooling system. Distilled, deionized,
or demineralized water is
recommended for mixing with ethylene glycol base engine
coolant concentrate. For minimum specifications of water quality, refer to John Deere
“Operations and Service Manual”, page 10-10.
Supplemental Coolant Additives
The use of supplemental coolant additives, such as John Deere Liquid Coolant
Conditioner, reduces corrosion, erosion, and pitting. These additives reduce the number
of vapor bubbles in the coolant and help form a protective film on cylinder liner surfaces.
This film acts as a barrier against the harmful effects of collapsing vapor bubbles.
Operating without proper coolant additive will result in increased corrosion, cylinder
liner erosion, and pitting, and other damage to the engine and cooling system. A simple
mixture of ethylene and glycol and water
WILL NOT give adequate protection.
Testing Engine Coolant
Maintaining adequate concentrations of glycol and inhibiting additives in the coolant is
critical to protect the engines and cooling systems against freezing, corrosion, and
cylinder liner erosion and pitting.
Through time and use, the concentration of coolant additives is gradually depleted and
periodic replenishment of inhibitors is required. The cooling system must be recharged
with additional supplemental coolant additives available in the form of liquid coolant
conditioner. John Deere LIQUID COOLANT CONDITIONER is recommended as a
supplemental coolant additive.
CAUTION
IMPORTANT – Never use automotive-type coolants (such as those meeting ASTM
D3306 or ASTM D4656). These coolants do not contain the correct additives to
protect heavy-duty Diesel engines. They often contain a high concentration of
silicates and may damage engine or cooling system.
CAUTION
IMPORTANT – DO NOT over-supplement antifreeze solutions, as this can cause
silicate-dropout. When this happens, a gel-type deposit is created which retards
heat transfer and coolant flow causing the engine to overheat.
CAUTION
IMPORTANT – DO NOT USE cooling system sealing additives or antifreeze
that contains sealing additives.