How to Change the Oil in a 2018 Honda CRF250L: MotoSport.com Proprietary Guide
Shop parts for a 2018 Honda CRF250L Dirt Bike.
Keeping your 2018 Honda CRF250L in prime condition means following a regular maintenance schedule—one of the most crucial tasks is changing the engine oil and filter. This comprehensive, MotoSport.com-proprietary how-to blog covers everything you need: the essential tools, step-by-step instructions, and model-specific tips for a hassle-free and professional result.
Tools and Materials Needed
- 1.6 quarts (1.5 liters) of 10W-30 motorcycle oil (Honda recommends a JASO MA-rated oil)
- New oil filter (OEM or compatible aftermarket; Honda part number 15410-KYJ-901 is commonly used)
- Oil drain bolt crush washer (Honda part number 94109-12000 is standard)
- Oil filter cover gasket (recommended but not always mandatory if the old one is undamaged)
- 8mm and 12mm sockets (deep well sockets are preferred for better fit)
- Ratchet and extension bar
- Torque wrench
- Allen key (if you need to remove an aftermarket skid plate)
- Oil catch pan
- Rags or paper towels
- Rubber gloves (for cleaner work)
- Funnel (to add new oil, optional but recommended)
- Shop cleaning spray/contact cleaner (optional)
Important Model-Specific Call-Outs
- Oil capacity:– 1.6 quarts (1.5 liters) after filter change.
- Drain plug location:– Bottom of the engine. If you use an aftermarket skid plate, it may need to be removed unless it's designed with cutouts for easy access.
- First oil change:– Recommended at 600 miles; every 8,000 miles or 12 months thereafter.
Always allow the engine to warm up for 3–5 minutes before starting the oil change for optimal drainage and minimal sludge left behind. - Tightening torque:– Drain bolt should be tightened to 9 ft-lbs (12 Nm); exceeding this may strip the engine case.
- Crush washers and filter gaskets:– Honda recommends replacement with every oil change, though riders sometimes reuse them a few times. Always inspect and replace if any sign of damage or flattening is present.
Step-by-Step Instructions
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Warm Up the Engine
- Start your CRF250L and let it idle for 3–5 minutes. This heats up the oil, making it thinner and easier to drain completely.
- Turn the engine off and let it rest for another 3–5 minutes to cool slightly for safety.
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Access the Oil Drain Plug
- If you have an aftermarket skid plate, remove it using an Allen key or appropriate sockets. The stock plate has a cutout so you may not need removal.
- Position your oil catch pan beneath the drain plug.
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Drain the Old Oil
- Using a 12mm socket, loosen the oil drain bolt at the bottom of the engine. Be cautious—the oil may be hot.
- Remove the drain bolt and allow the oil to fully drain into the catch pan. Inspect the crush washer and replace if deformed or compromised.
- Wipe the area around the drain hole clean with a rag. Replace the drain bolt and crush washer. Using a torque wrench, tighten the drain bolt to 9 ft-lbs (12 Nm).
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Replace Oil Filter and Gasket
- Remove the three 8mm bolts on the oil filter cover (right side of the engine). Carefully remove the cover—some oil will spill, so keep your catch pan nearby.
- Take out the old oil filter and gasket.
- Wipe the filter cover and its sealing surface clean. Install the new filter (ensure it's facing the correct direction—spring side out), and a new filter gasket if required.
- Reinstall the oil filter cover and hand-tighten bolts. Then, using a torque wrench, tighten to factory specification.
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Add New Oil
- Remove the oil fill cap (top right side of the engine case).
- Using a funnel, pour in up to 1.6 quarts (1.5L) of new 10W-30 motorcycle oil.
- Reinstall the oil fill cap.
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Check for Leaks and Oil Level
- Start the bike and let it idle for a couple of minutes; then switch it off.
- Let the bike rest for 2–3 minutes and check the oil sight glass on the right side case. Add oil if necessary to bring the level between the upper and lower marks.
- Inspect the drain plug and oil filter area for leaks.
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Dispose of Old Oil Responsibly
- Transport the used oil and filter to your local recycling center or auto parts shop for proper disposal.
Safety and Maintenance Tips
- Always double-check drain and filter bolts for tightness after your first post-change ride. Vibration can occasionally loosen them.
- Keep meticulous records of your oil changes, noting mileage and date for future reference and warranty coverage.
- Visually inspect for any metallic debris in the drained oil, which could indicate early signs of internal wear.
2018 Honda CRF250L Oil Change Summary
- Required oil:– 1.6 quarts (1.5L) of 10W-30 JASO MA oil
- Tools:– 8mm & 12mm sockets, ratchet, torque wrench, Allen key (skid plate), catch pan, rags
- Process time:– About 30–45 minutes
- Special note:– Always use a new crush washer and filter gasket for best results; observe correct torque to avoid case damage
Performing regular oil changes on your Honda CRF250L will maximize performance and engine longevity—visit MotoSport.com for all the OEM and aftermarket parts, tools, and oils you need for any service on your ride.
Related Shopping Categories
Shop Motor Oil for a 2018 Honda CRF250L Dirt Bike.
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Shop Oil Drain Pans for a 2018 Honda CRF250L Dirt Bike.
Shop Tools for a 2018 Honda CRF250L Dirt Bike.
Shop Oil Fillers and Drain Plugs for a 2018 Honda CRF250L Dirt Bike.
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.