How to Change the Oil in a 2010 Suzuki RM85L

Shop parts for a 2010 Suzuki RM85L Dirt Bike.

Changing the oil regularly in your 2010 Suzuki RM85L keeps your engine running at its best and extends its lifespan. Here’s a comprehensive, step-by-step guide, proprietary to MotoSport.com, on how to perform an oil change for this specific model, including vital tools, recommended oil, and model-specific call-outs to ensure a perfect job every time.

Tools and Supplies Needed

  • Socket wrench with appropriate sockets (for drain and fill plugs)
  • Drain pan (to catch old oil)
  • Oil measuring cup (with milliliter/cc markings)
  • Funnel (for tidy pouring)
  • Clean rags or shop towels (for spills and wiping parts)
  • Fresh transmission oil: SAE 10W-40, API SG, SH, SJ, SL, SM, or SN with JASO MA/MA1/MA2 rating
  • Torque wrench (to ensure proper tightness)
  • Gloves (optional, for cleanliness)

Oil Specs for the 2010 Suzuki RM85L

  • Oil capacity: 550 ml (1.2 US pt or 1.0 Imp pt)
  • Recommended oil: SAE 10W-40, API SG, SH, SJ, SL, SM, or SN with JASO MA (MA1/MA2)
  • Drain plug torque: 23 N·m (2.3 kgf-m, 16.5 lb-ft)
  • Oil level screw torque: 5.5 N·m (0.55 kgf-m, 4.0 lb-ft)

Step-by-Step Oil Change Instructions

  1. Warm Up the Engine
    • Start the bike and let it idle for a few minutes. This heats the oil and helps contaminants suspend in the oil, allowing for thorough drainage.
  2. Place the Bike on Level Ground
    • Turn off the engine and secure your bike upright on a stand or have someone help keep it vertical. This ensures accurate oil draining and re-filling.
  3. Remove the Filler Cap and Drain Plug
    • Put your drain pan directly underneath the engine’s drain bolt.
    • Remove the oil filler cap to allow atmospheric pressure for smooth drainage.
    • Use your socket wrench to loosen and remove the drain plug (located underneath the engine).
    • Let all old oil completely drain into the pan. This may take several minutes.
  4. Inspect and Clean
    • Inspect the drain plug for metal shavings (a small amount of fine debris is normal; excessive amounts may indicate internal wear).
    • Clean the plug and ensure its O-ring or washer is in good condition. Replace if damaged.
  5. Reinstall the Drain Plug
    • Use your fingers first, then tighten snugly with the wrench.
    • Finish with your torque wrench set to 23 N·m (16.5 lb-ft) as specified for this bike.
  6. Add New Oil
    • Measure 550 ml of the recommended oil. Using a funnel, pour the exact amount into the oil filler opening.
    • Reinstall and hand-tighten the filler cap.
  7. Run the Engine and Check for Leaks
    • Start the bike and let it idle for 2-3 minutes. Inspect the drain plug area and oil filter cap for any signs of leaks.
  8. Check and Adjust the Oil Level
    • With the bike on level ground and upright, remove the oil level screw (located on the side of the crankcase).
    • If oil comes out of the hole, the level is correct. If not, add small amounts of oil via the filler cap until it begins to weep out the oil level hole.
    • Reinstall and torque the oil level screw to 5.5 N·m (4.0 lb-ft).
  9. Clean Up
    • Wipe away all spilled oil. Properly dispose of the used oil at an authorized recycling center or auto parts store.

2010 Suzuki RM85L-Specific Notes and Callouts

  • This model’s engine uses transmission oil only, not a typical four-stroke engine oil system. Use only oil meeting the specified API and JASO specs.
  • Make sure the bike is kept upright (not just on the sidestand) when checking/draining oil for accurate readings and complete drainage.
  • Be cautious with the small oil capacity (550ml). Overfilling or underfilling can both cause premature engine or transmission damage.
  • Always inspect the drain plug O-ring—that is a common source of leaks, especially on older or frequently serviced bikes.
  • This model does not have an external oil filter; oil changes are your main method for removing wear particles.

Conclusion

Changing the oil on your 2010 Suzuki RM85L is a straightforward process that protects the performance and longevity of your dirt bike. Always use good quality oil, the correct torque for all bolts, and follow the exact oil level procedures. For all your OEM and aftermarket Suzuki parts, tools, and supplies, trust MotoSport.com—your source for everything dirt bike.

Written exclusively for MotoSport.com. For the precise maintenance schedule and further technical details, always consult your owner’s manual.

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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.