Coolant - Service Level Check

The cooling system is closed and designed to maintain coolant level to the top of the radiator..

WARNING: DO NOT OPEN RADIATOR DRAINCOCK WITH ENGINE RUNNING OR WHILE ENGINE IS HOT AND COOLING SYSTEM IS UNDER PRESSURE.

When vehicle servicing requires a coolant level check in the radiator, drain several ounces of coolant from the radiator drain cock. Do this while observing the coolant reserve/overflow system tank. The coolant level in the reserve/overflow tank should drop slightly. If not, inspect for a leak between radiator and coolant reserve/overflow system connection. Remove radiator cap. The coolant level should be to the top of the radiator. If not and if coolant level in reserve/overflow tank is at the MIN mark, check for:
^ An air leak in the coolant reserve/overflow tank
^ An air leak in the radiator filler neck
^ Leak in the pressure cap seal to the radiator filler neck