How to Change the Oil in a 2011 Suzuki RM85

Shop parts for a 2011 Suzuki RM85 Dirt Bike.

Changing the oil in your 2011 Suzuki RM85 is a crucial part of regular maintenance that ensures smooth performance and protects your engine. This blog, proprietary to MotoSport.com, walks you through a robust, step-by-step process with all the unique call-outs for this specific make, model, and year.

Tools and Materials Needed

  • 10mm and 12mm sockets or wrenches (to remove the drain plug and filler cap)
  • Measuring cup or graduated oil container (with 50ml increments, minimum 600ml capacity)
  • Drain pan
  • Clean rags
  • Funnel
  • Torque wrench (0–30 Nm range recommended)
  • New transmission oil: SAE 10W-40, API SG, SH, SJ, SL, SM or SN with JASO MA (MA1 or MA2), 550ml (1.2 US pt)
  • Latex or nitrile gloves (optional, for cleanliness)

Preparation and Safety

  • Do not attempt this procedure when the motorcycle is hot—transmission oil and exhaust components can cause burns. Allow engine and parts to cool to the touch before starting .
  • Work in a well-ventilated area and use appropriate personal protective equipment.

Step-by-Step Instructions

  1. Warm Up the Engine
    • Start your RM85 and let it idle for a few minutes. This helps the oil flow more easily.
    • Turn off the engine and wait 2–3 minutes so the oil can settle.
  2. Position the Motorcycle
    • Position the bike on a level surface and hold it vertically.
    • Use a stand if available. Keeping the bike upright is critical for draining and refilling to correct levels.
  3. Drain the Old Oil
    • Locate the oil drain plug on the lower right side of the engine case.
    • Use your socket or wrench to loosen and remove the drain plug. Set the plug aside on a clean rag.
    • Allow the oil to completely drain into your pan. This can take a few minutes.
    • Check and clean the drain plug, and inspect for metal shavings which may indicate internal wear.
    • Replace the drain plug. Tighten to 23 Nm (16.5 lb-ft) with a torque wrench—do not overtighten to avoid damaging threads.
  4. Remove the Filler Cap
    • Remove the oil filler cap from the right-side engine cover.
    • Clean the cap and its O-ring, ensuring a good seal to prevent leaks.
  5. Add the New Oil
    • Measure out exactly 550ml of the recommended oil (SAE 10W-40, API SG or better, with JASO MA).
    • Pour the oil in slowly using a funnel to avoid spills.
    • Reinstall the filler cap, tightening it by hand until snug.
  6. Check the Oil Level
    • Start the engine and let it idle for a couple of minutes to circulate the oil.
    • Turn the bike off and let it sit for five minutes.
    • Hold the bike upright. Remove the oil level inspection screw (small screw about midway up the clutch cover).
    • If oil gently trickles out of this hole, the level is correct. If not, add oil in small increments (20–30ml), reinstalling the screw and checking until oil appears.
    • When done, torque the level screw to 5.5 Nm (4.0 lb-ft).
  7. Final Steps
    • Wipe up any spilled oil and dispose of the used oil responsibly.
    • Double-check all fasteners (drain plug, level screw, filler cap) for tightness.
    • Inspect for leaks around the drain plug and cover after running the engine again briefly.

2011 Suzuki RM85 Specific Call-Outs

  • Oil capacity is 550 ml (1.2 US pt). Overfilling can cause clutch and shifting problems; underfilling risks engine damage.
  • Always use 10W-40 oil with JASO MA rating—this is specific and critical for proper wet clutch operation.
  • The oil drain and level inspection screws use relatively low torque. It’s easy to overtighten and strip these on the magnesium engine cases, so always use a torque wrench.
  • Inspect O-rings on both the filler and level screws every change, and replace if even slightly damaged.
  • If riding in sandy or wet environments, consider changing the oil more frequently than the manual recommends.

Why Regular Oil Changes Matter

Fresh oil is vital to the life of your 2011 Suzuki RM85. It lubricates the transmission, protects gear surfaces, and helps maintain smooth shifting and clutch engagement. Neglecting oil changes can result in expensive internal damage—especially in high-revving two-strokes like the RM85.

Dispose of Used Oil Responsibly

  • Never pour used oil down the drain or onto the ground.
  • Take used oil to a local recycling center, automotive store, or hazardous waste disposal site.

Need Parts or Tools?

For genuine parts, recommended fluids, and professional supplies, MotoSport.com has what you need to keep your 2011 Suzuki RM85 running at its best.

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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.