How to Change the Oil in a 2018 Honda CRF250L RALLY

Shop parts for a 2018 Honda CRF250L RALLY Dirt Bike.

Keep your 2018 Honda CRF250L Rally running at its best with regular oil and filter changes. This comprehensive guide walks you through every step, includes the necessary tools, and highlights specific details and tips unique to this make and model. All content is proprietary to MotoSport.com.

Tools and Supplies Needed

  • 8mm and 12mm sockets (ideally deep well)
  • Ratchet
  • Torque wrench (optional but recommended)
  • Allen key (if you have an aftermarket skid plate)
  • Drain pan
  • Funnel
  • Rubber gloves and safety glasses
  • Rags or paper towels
  • Contact cleaner
  • 1.6 quarts (1.5 liters) of 10W-30 motorcycle oil
  • New oil filter
  • New crush washer (for drain bolt)
  • New oil filter cover gasket (recommended, but original can be reused carefully a few times)
  • OEM or magnetic drain bolt (optional upgrade)

Preparation

  • Ensure you are working in a well-ventilated, safe area. Place your tools and supplies within reach.
  • Oil & filter change interval: Honda recommends performing an oil and filter change initially at 600 miles, then every 8,000 miles or every 12 months—whichever comes first.
  • Warm up your bike for 3–5 minutes at idle to allow the oil to drain more easily. Shut the engine off and let it cool slightly before starting work.

Step-by-Step Oil Change Guide

  • Remove the skid plate: Use the Allen key or appropriate tool to remove the stock or aftermarket skid plate for clear access to the drain plug and oil filter.
  • Clean around the oil filler cap: Use contact cleaner to prevent debris from entering the engine, then remove the filler cap to help oil drain more completely.
  • Position your drain pan: Place the oil drain pan under the engine’s drain bolt for minimal mess.
  • Remove the drain bolt: Use the 12mm socket to loosen and remove the drain bolt and crush washer. Allow all oil to drain fully. Inspect the crush washer and replace with a new one if necessary.
  • Remove the oil filter: Locate the oil filter cover on the right side of the engine. Remove the three 8mm bolts, then the cover. Note the orientation of the spring and gasket. Carefully remove the oil filter.
  • Clean oil filter cover and mating surfaces: Wipe away any oil and debris. Clean gasket surfaces and O-ring grooves with a lint-free rag.
  • Install the new oil filter: Place the new oil filter in the housing, rubber side in. Inspect the gasket and replace if worn or damaged. Ensure the spring is in position.
  • Reinstall the filter cover: Refit the cover and hand-tighten the three 8mm bolts. Use a torque wrench if desired for an even seal.
  • Reinstall the drain plug: Fit a new or inspected crush washer and reinstall the drain plug. Tighten to the recommended torque specification (see owner’s manual, typically 18 ft-lb – 24 Nm for Honda drain bolts).
  • Add fresh oil: Use a funnel to add 1.6 quarts (1.5 liters) of 10W-30 motorcycle oil. Go slow; don’t overfill. Reference your owner’s manual and check the fill line as you go.
  • Check for leaks: Reinstall the oil filler cap. Start the engine and let it run for a minute. Check around the filter and drain plug for leaks.
  • Final level check: With the bike upright and level on a flat surface, confirm the oil is at the correct level in the sight glass. If needed, top off with small increments.
  • Reinstall the skid plate: Ensure all fasteners are secure.
  • Dispose of used oil and filter responsibly.

2018 Honda CRF250L RALLY Specific Call-Outs

  • The oil capacity is 1.6 quarts (1.5 liters), but always add oil slowly and confirm level with the sight glass before finalizing.
  • The oil filter and crush washer can be reused a limited number of times, but Honda advises replacement at each change for longevity and reliability.
  • If your bike has an aftermarket skid plate, you may need to remove it completely, since some catch oil spillage when the filter is removed.
  • If using a magnetic drain bolt, install it with the same torque specifications as the OEM bolt for added debris collection.
  • After adding oil, let the engine idle for a few moments—it's normal for the oil sensor to briefly indicate a fault until circulation is complete; the warning should go away when the oil reaches the right level.

Tips for Success

  • Double-check for old crush washers stuck to the drain bolt seat before installing a new one.
  • Use only motorcycle-specific oil meeting Honda’s standards.
  • Always check for leaks before riding: a loose filter or drain bolt is a common source of problems.

Conclusion

Changing the oil and filter on a 2018 Honda CRF250L Rally is straightforward with the right tools and attention to detail. Diligent oil changes ensure maximum engine life and performance. If you need parts or high-quality motorcycle oil and tools, MotoSport.com is your trusted source for everything you need to keep your ride reliable and ready for 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.