How to Change the Oil in a 2020 Honda CRF150R: The Complete Guide
Shop parts for a 2020 Honda CRF150R Dirt Bike.
Changing the oil in your 2020 Honda CRF150R is a fundamental maintenance task that keeps your dirt bike running strong and extends engine life. Regular oil changes ensure the engine's internal parts are properly lubricated despite the high-revving and often dirty operating conditions faced by off-road bikes. MotoSport.com brings you a detailed, proprietary step-by-step guide tailored to your CRF150R's specific needs.
Tools & Supplies Needed
- 12mm socket or wrench (for drain bolt)
- 8mm socket (for oil filter cover)
- Ratchet or socket wrench (1/4” drive recommended)
- Oil drain pan
- Funnel
- Clean rags or paper towels
- Genuine Honda Oil Filter or equivalent (if replacing filter)
- New crush washers (recommended for drain bolt)
- Honda GN4 10W-40 oil or high-quality equivalent
- Measuring cup or graduated container (to measure 590cc)
- Gloves (optional but recommended)
Key Specifications for 2020 Honda CRF150R
- Oil type: 10W-40 (Honda GN4 or equivalent)
- Oil capacity (with filter change): 590cc
- Oil capacity (without filter change): 560cc
Step-by-Step Guide to Changing the Oil
-
Warm Up the Engine
- Start your CRF150R and let it idle for about 5 minutes. This warms up the oil, making it easier to drain fully.
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Turn Off and Cool Down
- Shut off the engine. Allow the bike to cool for 10–15 minutes so the oil isn't dangerously hot, but stays warm enough to flow freely.
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Preparation and Safety
- Place the bike on a level surface with a stand to ensure stability.
- Position your oil drain pan underneath the engine's drain bolt.
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Remove the Drain Bolt
- Locate the engine oil drain bolt (12mm) at the bottom of the engine.
- Use your 12mm socket/wrench to loosen and remove the drain bolt. Let the oil drain fully into the pan. This may take several minutes.
Pro tip: Replace the crush washer on the bolt for the most reliable, leak-proof seal.
Call-out for CRF150R: The drain bolt is easily accessible; take care not to overtighten and strip the threads, which is a common issue on these bikes.
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Change the Oil Filter (Recommended with Every Oil Change)
- Locate the oil filter cover (use 8mm socket) on the right side of the engine.
- Carefully remove the cover bolts and take off the cover.
- Remove the old oil filter. Wipe the area clean with a rag.
- Install the new Honda oil filter and O-ring (if applicable). Make sure the filter is seated properly.
- Reinstall the oil filter cover snugly – do not overtighten.
- If your model's filter O-ring looks worn or damaged, always replace it.
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Replace the Drain Bolt
- After the oil has fully drained, reinstall the drain bolt with a new crush washer. Torque it snug but not overtightened to prevent stripping the case.
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Add New Oil
- Remove the oil fill cap/dipstick on the right side of the engine.
- Using a funnel, slowly pour in 590cc (with filter change) or 560cc (without filter change) of high-quality 10W-40 motorcycle oil.
CRF150R Note: Pour slowly to avoid air bubbles or spills; the oil fill neck is narrow. - Reinstall the oil fill cap and dipstick.
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Check Oil Level
- Start the bike and let it run for about 30 seconds, then turn it off and let it sit for a couple minutes.
- Remove and wipe the dipstick, reinsert it (do not thread it in for reading), and check the oil level.
- If oil is below the proper mark, slowly add a small amount (do not overfill) and recheck.
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Final Inspection
- Check around the drain bolt and oil filter cover for any leaks.
- Wipe all areas clean of oil residue.
- Dispose of used oil and filters responsibly at your local recycling center.
2020 CRF150R-Specific Call-Outs – Tips
- Always use a new crush washer on the drain bolt to prevent leaks and avoid stripped threads—overtightening is a common mistake on this model. Torque values are light; “snug” is sufficient.
- Do not confuse the engine oil and transmission oil: both must be changed, but this procedure covers just the engine side. Transmission side uses a separate fill/drain system with slightly different specs (see your owner's manual.)
- Recommended oil change interval: After every 5–10 hours of riding, especially under harsh conditions.
- Always verify oil capacity in your owner's manual, but these values (590cc with filter) are supported by multiple sources.
Conclusion
Changing the oil in your 2020 Honda CRF150R is straightforward and protects your investment for countless rides. Always use quality tools and parts, and don't skip replacing crush washers or filter O-rings for best long-term results. For all your Honda CRF150R parts, oils, and filters, MotoSport.com has you covered.
Happy riding—keep your bike maintained, and it'll keep performing at its best.
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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.