Honda Pioneer 1000 2017, Owner'S Manual, Page: 177 / 307

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Your Honda SXS’s liquid cooling system dissipates engine heat
through the coolant jacket that surrounds the cylinder and cylinder
head.
Maintaining the coolant will allow the cooling system to work
properly and prevent freezing, overheating, and corrosion.
Use Pro Honda HP Coolant or an equivalent high-quality ethylene
glycol antifreeze containing corrosion protection inhibitors
specifically recommended for use in aluminum engines. Check the
antifreeze container label.
Use only distilled water as a part of the coolant solution. Water that
is high in mineral content or salt may be harmful to the aluminum
engine.
NOTICE
Using coolant with silicate inhibitors may cause premature wear of
water pump seals or blockage of radiator passages. Using tap water
may cause engine damage.
The factory provides a 50/50 solution of antifreeze and distilled
water in this Honda SXS. This coolant solution is recommended for
most operating temperatures and provides good corrosion
protection.
Decreasing the concentration of antifreeze to less than 40% will not
provide proper corrosion protection.
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