How to Change the Coolant in a 2018 GAS GAS XC250R
Maintaining your 2018 GAS GAS XC250R's cooling system is crucial to ensuring consistent engine performance, longevity, and reliability on any ride. Coolant change is a straightforward process, but there are specific steps and model-specific notes for the XC250R you should keep in mind. Below is a MotoSport-exclusive step-by-step guide for a complete coolant change.
Before You Begin
- Always perform coolant changes when the engine is completely cool to avoid scalding injuries or pressure-related spills.
- Use gloves and avoid skin or eye contact with coolant. If coolant contacts your skin or eyes, rinse with copious water immediately.
- Dispose of old coolant responsibly–it is toxic to humans and animals.
What You Need
- Fresh motorcycle-approved coolant (check your owner's manual for the recommended type and capacity)
- Basic hand tools (socket wrench, screwdrivers)
- Drain pan
- Clean rags
Step-by-Step Coolant Change Guide
- Prep the Bike
Make sure the bike is on a stable, level surface. Remove any plastics or guards that obstruct access to the radiator cap and water pump drain bolt. - Remove the Radiator Cap
Carefully loosen and remove the radiator cap to relieve any residual system pressure. Only do this with the engine completely cold. - Drain the Old Coolant
Place a drain pan under the water pump cover. Locate and remove the coolant drain bolt (typically on the side or bottom of the pump cover). Allow coolant to drain fully.
When the flow slows, you can gently rock the bike side-to-side to help evacuate all fluid.
Inspect the drain bolt and replace the crush washer or O-ring with a new one if present. - Flush (Optional)
For best results—especially after overheating or using the wrong coolant—you can flush the system with distilled water, then drain again before refilling. - Reinstall Drain Bolt
Once drained, reinstall the drain bolt and torque it to the value specified in your owner's manual (typically around 10 Nm or 7.4 lbf ft for similar models)*. - Refill with Coolant
Slowly pour new coolant into the radiator until it's close to the top.
Tip: On the XC250R, always fill slowly to prevent air pockets.
Squeeze the radiator hoses a few times to help release trapped air. - Air Bleeding
Some models include a bleeder screw on or near the cylinder head. If equipped, crack this open slightly until coolant seeps out, indicating air removal; then re-tighten.
On many two-stroke GAS GAS models, bleeding is done simply by running the engine briefly with the cap off, topping up as needed. - Check and Top Off
Replace the radiator cap securely. Start the engine and let it idle until it reaches operating temperature. Check the coolant level again (with the engine off and cooled) and top off if necessary. The level should always be below the max fill line to allow for expansion.
Special Notes for the 2018 GAS GAS XC250R
- Radiator cap location: The design places the cap for easy access, but plastics may need to be removed.
- Coolant type: Use only high-quality glycol-based or ready-to-use motorcycle coolant. Avoid automotive coolants with silicates—they can damage the water pump seals.
- Capacity: The system holds approximately 1 quart (check your manual for the specific volume).
- Regular inspection: The XC250R cooling system includes robust aluminum radiators, but due to their slim profile, periodically check for debris or bent fins that can restrict airflow.
- Protection cap: Ensure any thermal protection caps or shields installed on the coolant lines are properly reattached after the coolant change.
Finishing Up
- Wipe up any spilled coolant to prevent slipping or corrosion.
- Inspect hoses and clamps for leaks once the engine has cycled and cooled again.
- Regular changes (at least once per year or as specified by the manufacturer) will prevent corrosion and overheating issues.
Proper cooling system care is vital for the long-term health and maximum performance of your GAS GAS XC250R. This routine maintenance will keep you riding longer, safer, and with peace of mind.
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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.