How to Change the Oil in a 2019 Honda CRF450L: Complete Step-by-Step Guide

Shop parts for a 2019 Honda CRF450L Dirt Bike.

Maintaining your Honda CRF450L with regular oil changes is key to its long-term performance and reliability. In this guide proprietary to MotoSport.com, we cover all the details, tools, and Honda-specific tips you need to perform your own oil change, including important notes unique to the 2019 CRF450L.

Tools and Supplies Needed

  • 10mm Allen socket (for drain plug)
  • 8mm and 10mm sockets (for skid plate, seat, and plastic guards)
  • Ratchet and extensions
  • Torque wrench (to properly tighten bolts to factory specs)
  • Oil filter (Honda part number: 15412-MEN-671 or equivalent)
  • Fresh engine oil (Use 10W-30 or 10W-40, API SG or higher, JASO MA rating, 1.24 Quarts/1.18 Liters for fill with filter change)
  • Drain pan
  • Shop rags/paper towels
  • Rubber gloves (optional, for cleanliness)
  • Funnel (for less mess)
  • Replacement crush washer for drain bolt (recommended)
  • Safety glasses (optional)

2019 Honda CRF450L-Specific Call-Outs

  • Frequent oil changes are recommended: Every 600 miles for dual-sport/street use or after initial break-in, then every 8 races or 30 hours for off-road use.
  • Low oil capacity: The engine holds around 1.2 liters, so check the level carefully to avoid running low.
  • Oil check procedure: The bike must be held upright and level (not on the side stand) when checking the oil level. Use a block to straighten if needed.
  • Don't forget the O-ring: Inspect and lubricate the O-ring on the drain bolt; replace if damaged.
  • Skid plate removal: You'll need to remove the skid plate for access to the drain plug and filter.
  • Warm oil drains better: Run the engine for a few minutes to warm up the oil for complete drainage.

Step-by-Step Oil Change Instructions

  1. Warm Up the Engine
    • Start the bike and let it idle for 2–3 minutes. This thins the oil for a better drain.
  2. Remove the Skid Plate
    • Use an 8mm or 10mm socket to remove bolts securing the skid plate for access to the drain plug and filter.
  3. Drain the Old Oil
    • Position your drain pan under the engine.
    • Use a 10mm Allen socket to remove the drain bolt located at the bottom of the engine.
    • Allow all oil to fully drain. Be careful; it may be hot.
    • Inspect and replace the drain bolt O-ring/crush washer if necessary before reinstallation.
  4. Replace the Oil Filter
    • Remove the left side engine cover by loosening a few 8mm bolts.
    • Take out the old oil filter. Be sure the old O-ring does not stick to the engine case.
    • Lubricate the new filter's O-ring with clean oil, then install the new filter in the same orientation as the old one.
    • Tighten the cover bolts to factory specifications.
  5. Reinstall the Drain Plug
    • Clean the drain bolt and threads.
    • Install a new crush washer if available.
    • Thread the drain bolt in by hand, then torque to Honda's spec (typically 24 Nm/18 ft-lb; check owner's manual for confirmation).
  6. Add New Engine Oil
    • Remove the oil fill cap on the right side of the engine.
    • Using a funnel, add Honda-approved 10W-30 or 10W-40 oil, up to 1.24 quarts (1.18 liters) if also changing the filter.
    • Reinstall and hand-tighten the oil fill cap.
  7. Check the Oil Level
    • Start the engine and run it for 1–2 minutes, then shut off and let sit for 1 minute to let oil settle.
    • Ensure the motorcycle is upright and level (not on the side stand).
    • Remove the dipstick, wipe it clean, reinsert (but do NOT screw in), then remove to check the oil level. Add oil if needed.
  8. Reinstall Skid Plate and Clean Up
    • Reinstall the skid plate with original hardware.
    • Clean up any spilled oil and dispose of old oil/filter properly.

Pro Tips for 2019 Honda CRF450L Owners

  • Always use high quality oil that meets Honda—s API and JASO-MA standards for maximum clutch and engine protection.
  • Document each oil change and keep records, especially if using your bike in multiple environments (street/off-road).
  • Inspect your oil filter and engine oil for metal shavings or debris—these indicate abnormal wear.
  • If you use aftermarket skid plates or guards, confirm they don—t obscure access to the drain plug or filter.

Conclusion

Changing the oil on a 2019 Honda CRF450L is a straightforward task you'll quickly master. Sticking to Honda’s maintenance schedule will keep your CRF running strong, and ensures your adventure doesn’t end short due to a neglected oil change. For all your service parts and premium oils, trust MotoSport.com to keep you riding safely and confidently.

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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.