Maintain the coolant level at one inch below the top of the radiator upper tank.
CAUTION - Avoid injury when checking a hot engine. Cover the radiator cap in a thick cloth and turn it slowly
counterclockwise to the first stop. After the pressure has been completely released, press downward and finish removing
cap. Do not add coolant to an engine that has become overheated until the engine cools. Adding coolant to an extremely
hot engine can result in a cracked block or cylinder head.
In freezing weather, test the coolant for proper antifreeze protection to anticipated lowest temperature. Add
antifreeze solution to maintain proper protection.
Inspect the exterior of the radiator for obstructions. Remove all bugs, dirt or foreign material with a soft brush or
cloth. Use care to avoid damaging the fins. If available, use compressed air or a stream of water to dislodge particles
between the fins. Use compressed air or water in the opposite direction to normal air flow.
Check all hoses and connections for leaks. If any of the hoses are cracked, frayed, or feel spongy, they should be
When refilling the cooling system with plain water add one can of Ford Rotunda Rust Inhibitor 8A-19546-C. If
temperatures below +320F. are anticipated, replenish coolant with equal parts water and Ford Rotunda Long Life Coolant
Concentrate 8A-19549-A. This will provide protection to -350F. If coolant other than this is used it must meet Ford