How to Change the Oil in a 2020 Honda CRF250R — MotoSport.com How-To

Shop parts for a 2020 Honda CRF250R Dirt Bike.

Regular oil changes are essential to maximize the performance and longevity of your 2020 Honda CRF250R. This step-by-step guide will walk you through everything you need, special call-outs for this model, and expert tips to ensure a smooth and successful oil service.

Tools & Supplies Needed

  • 8mm T-handle or socket wrench
  • 6mm Allen wrench
  • Oil drain pan
  • Paper towels or shop rags
  • New oil filter (Honda OEM or compatible - most use 116 style filter)
  • Engine oil (10W-40 motorcycle oil; Honda GN4 or equivalent, synthetic is also acceptable)
  • Funnel
  • New drain bolt crush washer (recommended each change)
  • Torque wrench (optional, for precise reassembly)
  • Screwdriver/marker (optional, for labeling orientation of the oil filter cover)

Specific Call-Outs for the 2020 Honda CRF250R

  • Oil Capacity: The correct oil volume is approximately 1250cc (1.25L) for the CRF250R. Always refer to your owner’s manual for the precise specification for your riding conditions and modifications.
  • Skid Plate Removal: If you have an aftermarket or stock skid plate, remove it first for proper access to the drain bolt.
  • Oil Filter Placement: Pay careful attention to oil filter orientation during installation. The filter may be marked with “outside” – ensure it faces outward.
  • Double Drain System: Previous generations of CRF250R had separate engine and transmission oil, but the 2018–2021 models (including 2020) use a single shared oil system.

Step-by-Step Oil Change Instructions

  1. Warm Up Your Bike
    • Start and idle your CRF250R for 2–3 minutes. This thins the oil and helps it drain more completely.
    • Shut off the engine and let it cool slightly to a manageable temperature.
  2. Remove Skid Plate (if fitted)
    • Use your 8mm wrench to unbolt and remove the skid plate for full access to the drain plug.
  3. Drain the Oil
    • Position your oil pan under the drain bolt, located on the lower crankcase.
    • Using your 8mm T-handle, remove the drain bolt. Allow oil to drain completely. You may gently tip the bike side-to-side and back to front to help drain residual oil.
    • Check the drain bolt and replace the crush washer to ensure a proper seal.
  4. Remove and Replace the Oil Filter
    • Use your 8mm wrench to remove the three bolts securing the oil filter cover (right side of the engine).
    • Carefully pull off the cover—oil may drip out, so have a rag ready.
    • Remove the old oil filter, noting which end faces out. Some riders mark the case and cap with a marker for reassembly alignment.
    • Wipe out the filter cavity with a clean rag.
    • Install the new oil filter in the correct orientation (“outside” facing out, if marked).
    • Lightly lubricate the filter sealing surfaces with a bit of new oil.
    • Refit the cover and tighten the bolts evenly. Do not overtighten.
  5. Reinstall the Drain Bolt
    • If using a torque wrench, tighten the drain bolt to the manufacturer’s torque spec (approx. 13 lb-ft, but always double-check your owner’s manual).
  6. Add New Oil
    • Remove the oil fill cap.
    • Using a funnel, pour in the prescribed amount of oil (approx. 1250cc/1.25L).
    • Double-check the correct oil level using the bike’s sight glass or dipstick. Add oil until it reaches the proper level—be cautious not to overfill.
    • Refit the oil fill cap securely.
  7. Check for Leaks and Final Level
    • Start your engine and let it idle for a minute.
    • Shut down and allow oil to settle for a few minutes.
    • Recheck the oil level. If it is low, add oil in small amounts until correct. Reinstall the skid plate if removed.
    • Inspect all around the drain bolt and oil filter cover for leaks—tighten if necessary (never overtighten).

Expert Tips and Reminders for 2020 CRF250R Owners

  • Do not overfill. The recommended oil capacity is a starting point; always fine-tune to the correct sight glass/dipstick reading after running the bike.
  • Discard used oil responsibly: Collect and recycle used oil per local regulations.
  • Use quality oil: Honda GN4 or equivalent 10W-40 motorcycle oil (synthetic or mineral); never use automotive oils as they can harm wet clutches.
  • Inspect for metal particles: A small amount on the drain plug’s magnet is normal. Large pieces or continued excess may indicate engine wear.
  • Change interval: Race/track riders may need to change oil after every ride; recreational riders, every 5–10 hours. Consult your manual for recommended service intervals.

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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.