How to Change the Oil in a 2020 Honda CRF250L: MotoSport.com Guide
Shop parts for a 2020 Honda CRF250L Dirt Bike.
Changing your own oil is one of the best ways to extend the life and performance of your 2020 Honda CRF250L. This robust guide walks through the entire process, lists every tool you'll need, and calls out model-specific considerations so you get it 100% right—the first time, every time.
Tools and Supplies Needed
- 8mm and 12mm sockets (preferably deep well)
- Socket ratchet and extension
- Allen key set (if you need to remove an aftermarket skid plate)
- Oil catch pan
- Papers towels or shop rags
- Torque wrench (optional but preferred for precise installation)
- New oil filter (OEM or quality aftermarket; K&N 112 works fine)
- New drain plug crush washer (recommended with every change)
- New oil filter gasket (recommended)
- 1.6 quarts (1.5 litters) of 10W-30 motorcycle oil (Honda recommends 10W-30 for the CRF250L)
- Gloves (to keep your hands clean and safe)
Preparation
- Warm the engine by running the bike for 3–5 minutes. Warm oil drains faster and carries away more engine contaminants. Do not over-rev or run at high idle—just let the bike warm up at normal idle speed. Extended fast idling can damage the engine or exhaust system. (Owner's manual callout).
- If you have an aftermarket skid plate, remove it now for better access and to avoid mess. Stock skid plates have a drain hole, but many aftermarket plates catch and redirect oil, making them messier.
Steps to Change the Oil
- Put the bike on a firm, level surface and ensure it's secure, ideally on a stand.
- Remove the oil fill cap on the right side–this helps oil drain freely.
- Position your drain pan directly under the drain plug, which is at the lowest point of the crankcase.
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Remove the drain bolt (12mm socket).
- Be careful: oil will be hot and may drain quickly at first.
- Remove the crush washer; replace with a new washer if you follow Honda's recommendations (some riders safely reuse them a few changes).
- Allow all oil to drain. Tilting the bike slightly from side to side helps remove more old oil.
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Remove the oil filter cover (8mm socket). The oil filter is located on the right side and held in with three small bolts.
- You may need to gently tap the cover to break the seal.
- Take note of the orientation of the old filter and spring.
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Remove and replace the oil filter.
- Install the new filter with new gasket (Honda recommends replacing every time). Spring goes on the engine side, not the cover.
- Double-check you didn't leave the old gasket stuck to the engine.
- Clean the filter cover and mating surfaces and re-install the cover. Torque the bolts evenly (10 Nm – 7 lb-ft is typical).
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Inspect and install the drain plug with new or reused crush washer.
- Thread it in by hand first, then use your socket wrench. Torque to 24 Nm (18 lb-ft).
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Pour in fresh oil (1.6 quarts/ 1.5 liters of 10W-30).
- Pour slowly–use a funnel if necessary.
- Check for leaks around the drain bolt and filter cover as you add oil.
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Start the engine and let it idle a minute.
- Shut it off and wait 2–3 minutes for oil to settle.
- Check the level with the dipstick (inserted, don't screw in for check). Top off to the proper line if needed.
- Dispose of the old oil and filter responsibly, per local regulations.
- Final check: Take a short ride, then recheck for leaks and oil level.
Model-Specific Call-outs for the 2020 Honda CRF250L
- First oil change break-in period: The first oil change should be done between 600 and 1,000 miles to ensure proper engine break-in and remove metal particles left over from manufacturing. After this, follow Honda's recommended intervals of every 8,000 miles or 12 months, whichever comes first.
- OEM vs. Aftermarket Skid Plate: The stock skid plate includes a drain hole for oil changes; most aftermarket plates must be removed or may make oil changes messier.
- Washer & Gasket: Honda recommends changing the crush washer and oil filter gasket each time. Many riders reuse these a couple of times, but leaks may develop if reused too often or not replaced properly.
- Oil Filter Orientation: Ensure the spring is installed on the engine side of the filter, not the cover.
Common Mistakes and Pro Tips
- Tighten to spec: Over-tightening either the drain plug or filter cover can strip threads or damage seals—always use a torque wrench when possible.
- Check for leaks: A quick post-change check can avoid lengthy repairs later.
- Don't overfill: Add oil slowly and check the level to avoid excessive pressure or leaks.
Changing the oil yourself on the 2020 Honda CRF250L is easy, cost-effective, and gives you confidence in your machine. MotoSport.com recommends following Honda's schedule, using high-quality oil, and checking all fasteners and gaskets for every change for peace of mind and peak performance.
Related Shopping Categories
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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.