Buick ROADMASTER 1995 - Page 201

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4. With the coolant surge tank pressure cap off, start the
engine and let it run until you can feel the upper
radiator hose getting
hot. Watch out for the engine
fans.
By this time, the co-olant level inside the coolant
surge tank may be lower.
If the level is lower, add
more of the proper
mix to the coolant surge tank
until the level reaches
FULL COLD.
Then replace the
pressure cap. Be sure the
pressure cap
is tight.