26
COOLING SYSTEM
KEM Equipment
and
GM Powertrain
recommend the use of
DEX-COOL
coolant
in all
GM
engines.
WARNING:
Engine Damage may occur:
All LT4 engines must be vacuum filled with coolant. If
you need assistance or have questions, contact your local service dealer. Failure to vacuum fill this
engine with the recommended coolant may void all warranty.
(See Appendix A)
WARNING:
Never remove the heat exchanger cap under any condition while the engine is
operating. Failure to follow these instructions could result in damage to the cooling system, engine, or
cause personal injury.
CAUTION:
DO NOT add coolant or water to any engine that has become overheated until the
engine cools. Adding coolant or water to an extremely hot engine can result in a cracked block or
cylinder head.
CAUTION:
DO NOT mix DEX-COOL coolant (pink/orange colored) with traditional (green)
ethylene glycol coolant. Refer to the mixture chart on the container for additional antifreeze protection
information. DO NOT use alcohol or methanol antifreeze, or mix them with DEX-COOL coolant. Plain
water may be used in an emergency (except in freezing temperatures), replace water with the specified
coolant as quickly as possible to avoid damage to the system.
COOLANT LEVEL
Check the coolant level of the heat exchanger daily and only when the engine is cool.
Generally, a good time to do this is just prior to starting the engine for the first time each day.