Buick 1994 Roadmaster Owner's Manual page 244

To Check Coolant
When your engine is cold, the coolant level should be at
the "FULL COLD."
I
I
To Add Coolant
If thklight comes on it
means you're low on
engine coolant.
.
' .i .
.
..
When replacing the pressure'cap, make sure it is tight.
Surge Tank Pressure Cap
NOTICE:
Your radiator cap is a 15 psi
(1 05 kPa)
pressure-type cap and must be tightly installed
to prevent coolant loss and possible engine
damage from overheating.
If you need more coolant, add the proper mix at the
s m ,
but
only when the engine is cool.
When you replace your radiator pressure cap, an AC*
cap is recommended.