How to Change the Coolant in a 2016 Suzuki RM85: The Complete MotoSport Guide
Shop parts for a 2016 Suzuki RM85 Dirt Bike.
Routine coolant changes are essential for keeping your Suzuki RM85 performing at its best, especially in demanding motocross and off-road environments. The 2016 model uses a conventional liquid-cooling system, and regular maintenance will prevent overheating, corrosion, and engine damage. This guide, brought to you by MotoSport, details every step you need to keep your RM85 running cool and strong–with model-specific notes owners should not overlook.
What Every RM85 Owner Should Know
- Only use coolant compatible with aluminum radiators and engine components. Check your owner’s manual for Suzuki-recommended coolant types and avoid tap water or automotive coolant not rated for motorcycles.
- The RM85 does not use a coolant reservoir bottle, so the radiator must be filled directly to the fill neck each service.
- Inspect hoses, clamps, and the radiator for leaks or damage–replace worn parts promptly to optimize cooling and reliability.
- The recommended coolant capacity is about 950 ml (around 1 US quart). Overfilling can lead to spillage, while underfilling risks overheating.
Tools & Supplies Needed
- Motorcycle-compatible coolant (premixed or mix with distilled water as required)
- Catch basin
- 8 mm socket/wrench
- Distilled water (for flushing and mixing if needed)
- New drain-bolt gasket/washer
- Shop towels
Step-by-Step Coolant Change Instructions
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Allow the engine to cool completely.
Never open the radiator cap on a hot engine to avoid possible burns from hot coolant or steam. -
Remove the seat and side panels if needed to access the radiator cap.
This makes the job much easier on the RM85. - Open the radiator cap slowly to release any built-up pressure.
-
Locate the coolant drain boltusually found at the lowest point of the engine water pump cover.
Place the catch basin beneath this area. -
Remove the drain bolt using an 8 mm socket or wrench.
Allow all coolant to drain completely into the basin. - Flush the system: For a thorough flush, pour a small amount of distilled water into the radiator, reinstall the cap loosely, and gently rock the bike to dislodge old coolant. Remove the cap and let the rinse water drain out.
- Install a new drain bolt washer/gasket, then reinstall and tighten the drain bolt securely (usually 11 N·m/8 lb-ft for drain bolts–consult your service manual for exact values).
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Slowly refill the radiator with fresh coolant up to the bottom of the filler neck.
Fill carefully to avoid creating air pockets. -
"Burp" the system: With the bike upright, gently rock it side to side, and tap the radiator hoses to help release any trapped air.
If you can briefly start the engine and let it idle (cap off), this helps purge air bubbles. Shut off the engine quickly if coolant starts to rise. - Top off as needed and securely reinstall the radiator cap.
- Dispose of old coolant responsibly, according to local environmental regulations.
- Check for leaks and test ride: After warming up, recheck the coolant level and inspect all fittings for seepage.
MotoSport Tips for the RM85
- Carefully inspect the cooling system after tip-overs or crashes–the RM85’s radiators and hoses are vulnerable in a fall.
- For high-performance or race use, consider silica-free, race-specific coolants to prevent scale and maximize heat transfer.
- If you notice repeated coolant loss, investigate for potential gasket leaks or water pump issues common on two-strokes as they age.
Changing your coolant every 1-2 racing seasons–or anytime the fluid appears rusty, dirty, or cloudy–ensures your 2016 Suzuki RM85 stays fast, reliable, and race-ready. MotoSport is here to keep you on the track with parts, support, and expertise.
Related Shopping Categories
Shop Radiators for a 2016 Suzuki RM85 Dirt Bike.
Shop Coolant for a 2016 Suzuki RM85 Dirt Bike.
Shop Temperature Sensors for a 2016 Suzuki RM85 Dirt Bike.
Shop Tools for a 2016 Suzuki RM85 Dirt Bike.
Shop Radiator Hoses for a 2016 Suzuki RM85 Dirt Bike.
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.