How to Change the Oil in a 2024 Honda CRF300L RALLY

Shop parts for a 2024 Honda CRF300L RALLY Dirt Bike.

Changing the oil in your 2024 Honda CRF300L RALLY is an essential maintenance task to keep your bike running smoothly, improve engine longevity, and ensure top performance—whether you’re on the road or trail. This guide provides step-by-step instructions specifically for the Rally model and calls out any model-specific tips you need to know. All procedures and details are based on Honda’s official recommendations and enthusiast best practices.

Tools and Supplies Needed

  • 8 mm socket or wrench (oil filter cover bolts)
  • 12 mm socket or wrench (oil drain bolt)
  • Torque wrench (for reinstalling bolts to spec)
  • Oil drain pan
  • Funnel (clean, to avoid oil contamination)
  • Clean rags
  • Safety glasses and gloves
  • Honda OEM oil filter (Part #15410-KYJ-902)
  • Oil filter housing gasket (Honda Part #15412-KYJ-901)
  • New crush washer for drain bolt
  • Pro Honda GN4 4-stroke oil or an equivalent motorcycle oil, viscosity SAE 10W-30, API SJ or higher (not energy conserving), JASO MA-standard
  • 1.6 US quarts (1.5 L) of oil (with filter replacement)

Pre-Change Preparation

  • Perform the oil change after the initial 600-mile break-in and then every 8,000 miles or once a year. If you ride aggressively or off-road, change the oil more frequently for optimal engine health–.
  • Always work on a cool and clean surface. Position your bike upright on a level surface (use a stand if available).

Step-by-Step Oil Change Instructions

  1. Warm the Engine
    • Start the engine and let it idle for 3–5 minutes. This heats the oil, helping it flow and drain better.–
    • Turn off the engine and wait a few minutes for the oil to settle.
  2. Remove the Skid Plate (if equipped)
    • If your CRF300L Rally has a skid plate, remove it using a 4 mm Allen key or as needed for access to the drain bolt.–
  3. Drain the Old Oil
    • Place the drain pan directly under the oil drain bolt at the bottom of the engine.
    • Remove the oil filler cap to allow faster drainage.
    • Use a 12 mm socket to remove the oil drain bolt. Be careful—oil may be hot.
    • Allow oil to fully drain (it may take several minutes).
  4. Remove and Replace the Oil Filter
    • Use an 8 mm socket to remove the oil filter cover bolts (four bolts secure the cover).
    • Remove the cover and carefully extract the old oil filter; watch for residual oil.
    • Remove the old gasket from the housing cover, replacing it with a new OEM gasket.
    • Lightly coat the new oil filter gasket in fresh oil before installation.
    • Install the new oil filter (Honda Part #15410-KYJ-902), aligning it as per the service manual.–
    • Reinstall the cover with a new housing gasket (Honda Part #15412-KYJ-901). Reattach bolts and torque to 12 N.m (9 lbf.ft).–
  5. Install a New Crush Washer and Reinstall Drain Bolt
    • Clean the drain bolt and install a new crush washer.
    • Thread the bolt in by hand first, then torque the drain bolt to 24 N.m (18 lbf.ft) to avoid over-tightening.–
  6. Add New Oil
    • Place a clean funnel in the oil fill hole.
    • Pour in 1.6 US quarts (1.5 L) of approved motorcycle oil (SAE 10W-30, JASO MA, API SJ+).–
    • Check the oil filler cap O-ring for cracks or wear, replace if needed, and apply fresh oil to it before reinstalling.
    • Replace the oil filler cap securely.
  7. Start the Engine and Check for Leaks
    • Start the engine. Let it idle for a couple minutes and inspect for leaks at the drain bolt and filter housing.
    • Shut down the engine, let it sit for 2–3 minutes, then check the oil level using the inspection window.–
    • If the oil is below the upper window mark, carefully top off with additional oil as needed.
  8. Dispose of Old Oil and Filter Properly
    • Transfer drained oil into a sealable container and take it to a local recycling center or auto parts store.–
    • Do not dispose of used oil in household trash or drains.
  9. Reinstall the Skid Plate (if applicable)
    • Use appropriate hardware to secure your skid plate.

2024 CRF300L RALLY Model-Specific Call-Outs

  • Skid Plate Access: Some Rally models may have a different or aftermarket skid plate design—ensure access or removal before starting.
  • Oil Specs: The 2024 model retains the same oil viscosity and filter requirements as prior years—use a certified SAE 10W-30 oil (not "energy conserving"), API SJ or higher, JASO MA. Never use car oil, which can lead to clutch slippage.–
  • Torque Specs: Use a torque wrench for all bolts, especially the drain bolt and oil filter cover, to avoid leaks or thread damage.–
  • Service Intervals: While Honda recommends changing oil every 8,000 miles, frequent changes (every 3,000–4,000 miles) are ideal if you ride off-road or under severe conditions.–

Final Tips for Success

  • Always check your owner’s manual for the latest maintenance schedules and procedures.
  • Double-check for leaks after the first ride.
  • Record the date and mileage of your oil change for reference.

Ready to ride? Check MotoSport.com for all your OEM Honda CRF300L Rally oil filters, crush washers, and the best selection of certified motorcycle oils—delivered fast, so you’re never stuck in the garage when you could be on the trail.

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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.