How to Change the Oil in a 2000 Honda CR250: The MotoSport.com Guide

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Changing the transmission oil on your 2000 Honda CR250 is vital for ensuring smooth clutch and gearbox performance. This robust how-to guide from MotoSport.com will walk you through each step, list the precise tools you’ll need, and highlight tips unique to this legendary dirt bike model.

Tools and Supplies Needed

  • 17mm socket and ratchet (for the drain bolt)
  • 10mm socket (for the oil check bolt)
  • Drain pan (to catch the old oil)
  • Funnel (to minimize mess during filling)
  • Ratio-Rite cup or measuring container
  • Rag (for cleaning up spills and wiping parts)
  • New transmission oil: Pro Honda HP Transmission Oil, Pro Honda GN4 10W-40 SF/SG engine oil, or a quality equivalent (Maxima MTL or Maxima 80W are also recommended for wet clutches)
  • Gloves (to keep your hands clean)
  • New crush washer for the drain bolt (optional, but recommended for a leak-free seal)

Preparation: Warm Up the Engine

  • Start the CR250 and let it idle for a few minutes. This helps the oil warm up so it drains more completely.
  • Shut off the engine and place the bike on a stable stand.

Step-by-Step Oil Change Process

  1. Position the Drain Pan
    • Place the drain pan directly underneath the transmission drain bolt–located on the bottom of the engine case near the shifter.
  2. Remove the Drain Bolt
    • Use your 17mm socket to carefully loosen and remove the drain bolt.
    • Allow all the old oil to fully drain out. It may take a few minutes, especially if the bike wasn’t well warmed up.
  3. Remove the Oil Filler Cap
    • Twist off the oil filler cap (on top of the right-side engine cover) to promote better drainage.
  4. Clean and Inspect the Drain Bolt
    • Wipe the drain bolt and washer. Inspect for metal debris or damage. Replace the crush washer if it's crushed or damaged for an optimal seal.
  5. Reinstall the Drain Bolt
    • Hand-thread the drain bolt and snug it down with your 17mm socket. Do not overtighten–it can strip the aluminum threads.
  6. Fill with New Oil
    • Use a Ratio-Rite cup or measuring container to measure out exactly 1.22 liters (1.29 quarts) of transmission oil–this is the factory "at change" capacity for the 2000 CR250.
    • If you're using a product like Maxima MTL, pour about 1 liter, then slowly add the rest to avoid overfilling .
    • Insert the funnel into the oil filler opening and pour the oil slowly to prevent overflows. If pouring directly onto the clutch (inside the case), work the clutch lever a few times during filling to help the oil saturate the plates evenly .
  7. Reinstall the Filler Cap and Check Oil Level
    • Replace and tighten the oil filler cap.
    • Start the bike and let it idle for 2–3 minutes to allow oil to settle and distribute.
    • With the bike level, remove the oil check bolt (a 10mm bolt on the right crankcase cover). If oil dribbles out, the level is correct. If none comes out, add a small amount until it does .
    • Reinstall the oil check bolt and wipe any excess oil.

Specific Call-Outs for the 2000 Honda CR250

  • Capacity at oil change is 1.22 liters (1.29 quarts). Do not overfill, as excess oil can cause clutch drag and fluid leaks .
  • Recommended oil types for best clutch and transmission life: Pro Honda HP Transmission Oil, GN4 10W-40, or Maxima MTL/80W for wet clutch compatibility .
  • Check the drain bolt and threads for wear; overtightening can strip aluminum cases.
  • Replace the crush washer at every change to ensure a leak-free seal.
  • Inspect old oil for metallic debris–a sign of transmission wear.
  • Oil changes every 10–20 hours of riding are generally recommended for recreational use, more often if racing or riding in harsh conditions .
  • The transmission and engine are separate on the CR250; only change the transmission oil–premix fuel handles cylinder lubrication .

Final Tips

  • Always use the correct amount and type of oil for maximum performance and clutch health.
  • Dispose of old oil responsibly at an approved recycling facility.
  • Double-check all bolts for tightness after the oil change is complete to prevent leaks while riding.
  • Keep a maintenance log with hours or miles between oil changes for your CR250’s long-term health.

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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.