How to Change the Oil in a 2007 Honda CRF450R

Shop parts for a 2007 Honda CRF450R Dirt Bike.

Keeping your 2007 Honda CRF450R running strong means regular maintenance, and nothing is more essential than a thorough engine oil change. Follow this step-by-step guide, written exclusively for MotoSport.com, to ensure your CRF450R stays in top condition. We break down the tools you’ll need, each action to take, and call out specific details every 2007 CRF450R owner should know when completing this essential bit of DIY maintenance.

Tools and Materials Needed

  • 8mm and 10mm socket (or wrench)
  • Ratchet
  • Torque wrench (for proper bolt tightening)
  • Drain pan (for used oil)
  • Replacement engine oil (Honda recommends 10W-40, or Rotella 15W40, see note below)
  • New oil filter
  • Replacement O-ring for the oil filter cover (recommended)
  • Shop rags or towels
  • Funnel
  • Gloves and safety glasses (for protection)

Before You Begin

  • Run your engine for a few minutes to warm up the oil. Warm oil drains easier, pulling out more contaminants and preventing residue build-up in your engine.
    Tip: Never drain cold oil from a cold engine unless required by manufacturer.
  • Ensure the bike is secured on a level surface or stand to prevent accidents or uneven draining.

Step-by-Step Oil Change Instructions

  1. Remove the Skid Plate (if equipped)
    • Loosen and remove the three 10mm hex bolts securing the skid plate–one on each side and one beneath the engine–then remove the plate for access to the drain bolt.
      This step may vary if aftermarket plates are installed.
  2. Drain the Engine Oil
    • Place a drain pan directly under the engine’s drain plug.
    • Using your 10mm socket or wrench, carefully remove the drain plug located on the bottom of the engine.
    • Allow all oil to drain completely. Give the bike a slight tilt from side to side to assist full draining.
    • Inspect the drain plug for metal shavings, which can indicate internal engine wear.
  3. Remove and Replace the Oil Filter
    • Locate the oil filter cover. Using your 8mm socket, remove the bolts holding the cover in place.
    • Carefully pull out the old filter. It’s usually spring-loaded, so be ready for a bit of tension as you release the cover.
    • Wipe the cover clean and inspect or replace the filter cover O-ring to ensure a good seal.
    • Install the new oil filter, making sure it seats properly per the filter’s orientation (consult your owner’s manual if uncertain).
    • Reinstall the cover and tighten to manufacturer torque specifications.
  4. Replace the Drain Plug
    • Install a new crush washer (recommended) on the drain plug.
    • Reinstall the drain plug by hand to avoid cross-threading, then torque it to specification (consult manual – typically 18 ft-lb for Honda CRF450R models).
  5. Add Fresh Oil
    • Using a clean funnel, fill the engine with fresh oil. The 2007 CRF450R engine typically requires approximately 0.74 Liters (0.78 US qt) when replacing oil and filter.
    • If using aftermarket products such as Rotella 15W40, many owners have reported positive results for both engine and transmission use–but always confirm with the latest Honda recommendations or MotoSport.com parts guides for best results.
      Do not overfill–add a little less than the specified amount then check the sight glass or dipstick level, topping off as needed.
  6. Check Oil Level and for Leaks
    • Start the engine and let it idle for 1–2 minutes. Turn it off and wait briefly.
    • Check underneath for leaks around the drain bolt and oil filter cover.
    • Check the oil level with the bike standing upright. Add oil as required to reach the appropriate level.
  7. Reinstall the Skid Plate
    • Once all checks are complete, reattach the skid plate using the three bolts removed earlier and torque them to specification if required.
  8. Properly Dispose of Old Oil and Parts
    • Used engine oil and filters are hazardous; seal them in a bag or container and take them to a local recycling center or authorized disposal facility.

Specific Call-Outs for the 2007 Honda CRF450R

  • This model has separate engine and transmission oil compartments. Ensure you are changing the correct one, as procedures and oil weights may differ between compartments. The instructions above are for the engine oil side.
    Refer to your owner’s manual for transmission side procedures and capacities.
  • If you hear unusual noises after changing your oil–especially a high-pitched whine–it could indicate low transmission oil. Always double-check both oil compartments on this dual-lube model.
    Some riders use Rotella 15W40 for both sides, but always confirm what’s appropriate for your riding style and climate.

Helpful Tips

  • Stay consistent with oil change intervals; change your engine oil every 5–10 ride hours for best performance and longevity.
    Some owners suggest changing the transmission oil every other engine oil change.
  • Keep extra filters, O-rings, and crush washers on hand so you’re never caught unprepared.

Conclusion

Change the oil on your 2007 Honda CRF450R regularly and you’ll enjoy reliable performance and extended engine life. For genuine Honda parts, oil, and expert service, MotoSport.com is your trusted partner on every ride. Spin those wrenches, and keep your machine ready for the next adventure.

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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.