Honda 1996 Civic Coupe Owner's Manual page 138

8. Put the cap on the radiator, only
tighten it to the first stop. Start the
engine and let it run until it warms
up (the radiator cooling fan comes
on at least twice).
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.
9. Turn off the engine. Check the
level in the radiator, add coolant if
needed. Install the radiator cap,
tighten it fully.
Cooling System
RESERVE TANK
10. Fill the reserve tank to the MAX
mark. Install the reserve tank cap.
Maintenance