Honda SH150i 2010 Owner's Manual page 109

Coolant
Decreasing the concentration of antifreeze
to less than 40% will not provide proper
corrosion protection.
Increasing the concentration of antifreeze
is not recommended because it decreases
cooling system performance. Higher
concentrations of antifreeze (up to 60%)
should only be used to provide additional
protection against freezing. Check the
cooling system frequently during freezing
weather.
102
Servicing Your Honda
Checking & Adding Coolant
Refer to Saf ety Precautions
RIGHT FRONT
(2)
(3)
(1) reserve tank
(2) UPPER level mark
(3) LOWER level mark
1. Park the scooter on its center stand on a
firm, level surface.
on page 72 .
(1)