How to Change the Oil in a 2026 Honda CRF450RL: A MotoSport.com Guide

Shop parts for a 2026 Honda CRF450RL Dirt Bike.

Regular oil changes are essential for the performance and longevity of your 2026 Honda CRF450RL. Below you’ll find a detailed, proprietary guide exclusive to MotoSport.com, covering everything you need to complete the job confidently and keep your machine running at its best.

Tools and Materials Needed

  • 10mm Allen key (for the drain plug)
  • 10mm & 8mm sockets or wrenches (for skid plate and filter cover)
  • Torque wrench (for reinstalling bolts to specification)
  • Drain pan
  • Funnel
  • Clean rags
  • Safety glasses
  • Rubber gloves
  • New oil filter (OEM Honda filter part number for CRF450RL)
  • New engine oil (Honda recommends 10W-30 API SJ or higher)
  • Replacement O-rings (optional, inspect before reusing)

Preparation

  • Warm up the engine for 3-5 minutes. This thins the oil, helping it drain completely for a thorough change. Shut the engine off and allow it to cool enough to touch.
  • Park the bike on a level surface and secure it on a stand if available, ensuring it’s upright and stable.

Step-By-Step Oil Change Instructions

  1. Remove the skid plate:
    • Use a 10mm socket or wrench to remove the three bolts holding the skid plate: one on each side, one underneath.
    • Set the plate aside with its hardware.
  2. Locate and remove the drain plug:
    • Find the oil drain plug on the bottom of the crankcase.
    • Use your 10mm Allen key to loosen and remove the plug.
    • Let the old oil drain fully into the oil pan. Give it several minutes for a thorough drain.
  3. Remove and inspect the drain plug:
    • While oil drains, check the drain plug for metal shavings (some fine particles are normal, but excessive debris may indicate internal wear).
    • Replace the sealing washer/O-ring on the plug if it looks worn or damaged.
  4. Remove the oil filter:
    • Locate the oil filter cover (held with 3 bolts) on the right or left engine case, depending on your view model year. Use a 10mm socket or wrench to remove these bolts.
    • Carefully take off the cover; be ready for a little more oil to drain out.
    • Pull out the old filter. Note which side the rubber gasket is facing when removing (the gasket should face the cap).
    • Inspect and clean the filter cover and O-ring surfaces. Replace the O-ring if it’s flattened or cracked.
  5. Install the new oil filter:
    • Place the new filter into the case, matching the original orientation. Spring placement should be correct per the service manual (typically into the housing recess).
    • If reusing the O-ring, check it for any signs of wear; otherwise, fit a new one.
    • Reinstall the cover and evenly tighten the bolts to factory spec using your torque wrench.
  6. Reinstall the drain plug:
    • Once draining is complete, reinstall the plug with a fresh washer/O-ring if needed.
    • Tighten to Honda’s specified torque (check your owner’s manual or service book).
  7. Add new engine oil:
    • Use a funnel to add new oil via the oil filler cap.
    • For the CRF450RL, the oil capacity is approximately 1.2 quarts (1.13L) with filter change. Double-check in your manual for model-specific amounts.
    • Use 10W-30 API SJ or higher, as recommended by Honda.
  8. Check oil level:
    • Insert the dipstick without screwing it in; check the level and top off as needed.
    • Do not overfill, as this can lead to excessive engine pressure or leaks.
  9. Start and inspect:
    • Start the bike and let it run for 30–60 seconds to circulate new oil.
    • Turn off engine; wait a couple of minutes, then re-check the oil level and adjust if necessary.
    • Look for leaks around the drain plug and filter cover.
  10. Reinstall skid plate:
    • Replace the skid plate and tighten bolts securely.

2026 CRF450RL-Specific Tips and Call-Outs

  • Oil change intervals recommended by Honda are every 600 miles for street use, or after the initial break-in and then every 8 races / 30 hours for off-road use.
  • Inspect rubber O-rings with every oil change. If you’re changing oil frequently, you can reuse good O-rings, but always check for wear or damage and replace if necessary.
  • The oil filter orientation is important – make sure the rubber ring faces the cap during installation.
  • This engine has a single oil compartment (unlike some older Honda MX models with separate gearbox and engine oil).
  • If you ride in especially hot or dusty conditions, check the oil and filter more frequently and consider changing at shorter intervals for optimal protection.
  • Always dispose of used oil and filters responsibly per local regulations.

Conclusion

Performing a routine oil change on your 2026 Honda CRF450RL is straightforward with the right tools and knowledge. Consistent oil changes help prevent premature engine wear and ensure peak performance, whether tearing up trails or logging street miles. For OEM filters, oil, and any other parts—and the best advice—visit MotoSport.com and keep your CRF450RL at its toughest.

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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.