Here's a general procedure. However, consult your owner's manual for specific details and diagrams, as variations may exist depending on your specific engine and trim level. Improper procedures can damage your cooling system.
Tools You'll Need:
* Drain pan: A large capacity pan to catch the coolant. At least 5 gallons.
* Wrench: The size needed to remove the radiator drain petcock (usually a small wrench, possibly 8mm or 10mm). Check your vehicle first.
* Gloves: Coolant is corrosive.
* Safety glasses: Protect your eyes from splashes.
* Funnel (Optional): To help refill the system.
Steps:
1. Locate the Radiator Drain Petcock: This is usually located at the bottom of the radiator, on the driver's side. It's a small valve.
2. Position Drain Pan: Place the drain pan underneath the radiator drain petcock.
3. Open the Drain Petcock: Carefully turn the petcock counterclockwise to open it. The coolant will begin to drain. This may take some time.
4. Open the Radiator Cap (Optional but Recommended): After some coolant has drained, carefully open the radiator cap (letting pressure escape first if it's pressurized) to allow for more complete draining. Be aware that some hot coolant may still be inside.
5. Allow Complete Draining: Let the coolant drain completely. This might take 15-20 minutes or more.
6. Close the Drain Petcock: Once draining is complete, close the petcock by turning it clockwise until it's tight.
7. Check for Leaks: Once the radiator is empty, inspect the petcock and surrounding area for any leaks.
8. Refilling: Once drained, you'll need to refill the radiator with the correct type and amount of coolant. Consult your owner's manual for the specifications. Usually a 50/50 mix of coolant and distilled water is recommended.
Important Considerations:
* Coolant Disposal: Coolant is toxic and should be disposed of properly. Check with your local waste disposal facility for guidelines. Do not pour it down the drain or onto the ground.
* Other Drains: Your vehicle may have other drain points, such as a drain plug on the engine block. Consult your repair manual to determine if you need to drain these as well for a complete system flush.
* Pressure Test (Optional): After refilling, some mechanics will pressure test the system to check for leaks.
* Bleeding the System (usually necessary): Air can get trapped in the cooling system after draining and refilling. You'll likely need to "bleed" the system (look up your specific vehicle’s bleeding procedure) to remove trapped air bubbles.
This is general guidance. Always consult your owner's manual for the correct procedure for your specific 1997 Dodge Ram 1500. If you're not comfortable performing this task yourself, take your vehicle to a qualified mechanic.
