Monaco Cayman 2006, Manual

Page: 266 / 300

258 • Section 10 — Chassis Information Cayman 2006
Coolant Levels:
• Check the coolant level daily or when refueling.
• If the coolant is below the
MIN
mark, the low coolant alarm will sound and the low coolant light will
appear on the dash.
• The coolant level should remain between the
MAX
and
MIN
level in the reservoir.
INSPECTION:
Stop the motorhome and inspect the coolant level before continued operation.
INFORMATION:
Refer to the Engine Manufacturer Owner’s Manual for details on engine coolant
maintenance.
NOTE:
Have an inspection performed of the surge tank cap seal and have the cap pressure tested at
each oil change. The reservoir cap is rated at 16 psi.
Coolant Types:
•
Coolant must meet ASTM 04985 (6M6038M) specifi cations.
INFORMATION:
Refer to OEM manual for detailed antifreeze information.
Adding Coolant:
If the addition of coolant is necessary, simply remove the cap from the surge tank and add the proper mixture
of coolant to the system until it reaches the proper level. If coolant is lost from the engine, it is required to
open the petcock at the top-left of the radiator (NOT the drain petcock at the bottom of the radiator) when
adding coolant.
Adding straight water or antifreeze to the system creates an imbalance of the coolant mixture. While
adding small amounts occasionally may not affect the mixture greatly, large amounts (½ gallon) or frequent
“top-offs” will.
Glycol antifreeze, usually in the form of ethylene glycol or propylene glycol, provides an increased boiling
point of the coolant mixture, increased freeze protection, and helps prevent water pump cavitation (air bubbles in
the coolant mixture that can result in wear of the engine). While the ratio of water and glycol can be adjusted to
meet differing anti-boil and freeze protection, it is recommended that a mixture of 50% water and 50% glycol be
used. This 50/50 mixture provides freeze protection to -34º. The water in the coolant system serves as a base. It is
critical to use as pure of water as possible. Salts and other minerals in the water can solidify in the cooling system
causing scaling and clogging of the radiator.