Honda 1994 Prelude Online Reference Owner's Manual page 140

Cooling System
Do not add any rust inhibitors or
other additives to your car's
cooling system. They may not be
compatible with the coolant or
engine components.
Replacing Engine Coolant
The cooling system should be
completely drained and refilled
with new coolant according to the
time and distance recommenda-
tions in the maintenance schedule.
Only use recommended antifreeze.
Draining the coolant requires
access to the underside of the car.
Unless you have the tools and
knowledge, you should have this
maintenance done by a skilled
mechanic.
Maintenance
1. Slide the heater temperature
control lever to maximum heat.
Open the hood. Make sure the
engine and radiator are cool to
the touch.
2. Remove the radiator cap.
DRAIN
BOLT
3. Loosen the drain plug on the
bottom of the radiator. The
coolant will drain through the
splash guard. Remove the drain
bolt from the engine block.
DRAIN
PLUG