Things You'll Need:
- Basic water hose
- Water with soap
- Soft nylon brush
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Step 1
Make sure the engine is cool before starting to clean. Auto experts say putting cold water on a hot engine can damage it. In addition, a hot engine means the radiator contains hot coolant under intense pressure.
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Step 2
Push up the Ram hood and put it in a securely fixed, open position. Locate your radiator on the front left side of the truck for the 3.7L, 4.7L and 5.7L engines. Loosen dead insects and other debris by dipping the nylon brush into the soapy water and gently scrubbing the radiator front in the direction of the fins. Rubbing against the direction of the fragile metal fins can cause them to bend.
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Step 3
Cover the radiator front with gentle streams of water. Avoid turning the water pressure up too high because too much pressure on the delicate radiator fins results in bending. Repeat this cleansing process every 12,000 miles or according to scheduled maintenance in your owner's manual.










