How to Change the Coolant in a 2013 GAS GAS EC 450F
Routine coolant changes are crucial to maintain the performance and longevity of your 2013 GAS GAS EC 450F. A fresh coolant flush prevents overheating, corrosion, and potential engine damage–especially important for high-compression, off-road bikes like the EC 450F. Below, MotoSport breaks down the full procedure and shares details specific to your machine.
Tools and Materials Needed
- Phillips and flathead screwdrivers
- Socket set and wrench (for radiator shrouds, drain plug)
- Catch pan or container
- Funnel
- Fresh coolant: Use a 50/50 mix of ethylene glycol-based antifreeze and distilled water. Ensure compatibility with aluminum engines and radiators.
- Gloves and shop rags
Drain the Old Coolant
- Let the engine cool completely. Hot coolant can cause serious burns.
- Place the motorcycle on a level surface using a stand, keeping it perpendicular to the ground for accurate draining.
- Remove the seat and side panels as needed for access to the radiator cap and overflow bottle.
- Open the radiator cap slowly to release pressure.
- Locate the coolant drain bolt on the water pump cover (lower right side of the engine).
- Position your catch pan under the drain plug and remove the plug. Allow all coolant to fully drain from the system.
- Inspect the coolant for signs of rust, oil, or debris–which could indicate other issues.
- Remove the overflow reservoir (if equipped on your EC 450F) and drain it. If dirty, rinse with distilled water and reinstall.
Flush (If Needed)
- If your system has not been serviced regularly or if you note scale/rust, flush with a mix of 50% distilled water and 50% vinegar. Refill, run the engine until warm, then drain and flush twice more with plain distilled water. Allow to cool before each step.
Inspect the Cooling System
- Check radiator hoses for cracks, stiffness, or leaks.
- Examine hose clamps for secure fit and the radiator for bent fins.
- Replace worn components before proceeding to avoid leaks or overheating.
Refill With Fresh Coolant
- Reinstall the drain plug and torque to manufacturer specs.
- Using a funnel, fill the radiator with your 50/50 coolant mix up to the base of the filler neck.
- Gently squeeze hoses to release trapped air. Rock the bike carefully side-to-side to help bubbles rise.
- Fill the overflow bottle to the indicated fill line, if present.
Bleed and Top Off
- With the radiator cap off, start the bike and allow it to idle until it reaches operating temperature. Watch for air bubbles escaping as the thermostat opens.
- Once the coolant level drops, top off the radiator again as needed.
- After no more bubbles appear, install the radiator cap securely.
Recheck After Cycling
- After your first ride, let the bike cool and recheck both the radiator and overflow reservoir levels, topping off as needed. Coolant may settle or air pockets may work free.
Notes Specific to the 2013 GAS GAS EC 450F
- This model uses a permanent antifreeze (originally green, 50% ethylene glycol/distilled water) for optimal freezing protection and aluminum corrosion resistance.
- Total coolant capacity is similar to other large-bore enduros; always confirm the fill amount by monitoring the level rather than relying solely on spec sheets.
- Spills on paint, frame, or rubber components should be rinsed immediately. Coolant on tires can make them dangerously slippery.
- Inspect the water pump and consider replacing its seal if persistent coolant loss occurs after regular flushes.
Proper coolant maintenance helps ensure your EC 450F operates at peak performance on every ride–from enduro courses to trail adventures. Regular service prevents overheating and engine damage, keeping your bike ready for the next MotoSport outing!
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Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.