How to Change the Oil in a 2022 Honda CRF150R Big Wheel

Shop parts for a 2022 Honda CRF150R Big Wheel Dirt Bike.

Routine oil changes are crucial for keeping your 2022 Honda CRF150R Big Wheel running efficiently and protecting its high-performance engine and transmission. Honda’s CRF150R features separate engine and transmission oil compartments, so you’ll need to change both fluids and the oil filter for a comprehensive service. This guide will walk you through the process step-by-step, including specific details and tips for this model to ensure top performance and longevity.

Tools and Supplies Needed

  • Socket wrench set (8mm, 10mm, 12mm sockets)
  • Oil drain pans (two recommended, one for each side)
  • New crush washers for drain bolts (recommended)
  • Funnel
  • Clean rags
  • Replacement engine oil (SAE 10W-40 recommended; GN4 10W-40 is Honda’s OEM oil) – about 590cc for the engine, 580cc for the transmission
  • Replacement oil filter and O-rings
  • Torque wrench (recommended for drain bolts)
  • Safety gloves
  • Bike stand (optional, but helpful)

Model-Specific Call-Outs for 2022 CRF150R Big Wheel

  • Dual Oil System: The CRF150R series uses separate compartments for engine and transmission oil. Do not mix the two fluids; use 10W-40 for both unless you prefer a dedicated transmission oil (Honda allows for this option).
  • Engine Oil Capacity: 590cc (with filter change); 560cc (without filter change)

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  • Transmission Oil Capacity: 580cc

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  • Drain bolts are soft aluminum: Do not overtighten. Use a torque wrench if possible to avoid stripping.
  • Always use new crush washers on drain bolts to prevent leaks

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  • Check oil level after running the engine: Always run the engine for a few minutes before a final check and adjustment. Use the dipstick for the engine side

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Step-by-Step Oil Change Procedure

  1. Warm Up the Engine
    • Start the bike and let it idle for 3–5 minutes. This warms the oil for better drainage.
    • Shut off the engine and secure the bike on a stable surface or stand.
  2. Drain the Engine Oil
    • Locate the engine side drain bolt (left side, below the engine; reference your manual for specifics).
    • Place an oil pan underneath, remove the drain bolt, and let oil drain fully.
    • Remove the oil filler cap/dipstick to allow better flow.
    • Inspect the drain bolt and its crush washer. Replace the washer if deformed or worn.
  3. Drain the Transmission Oil
    • Locate the transmission side drain bolt (right side of the engine).
    • Position a second drain pan and remove the transmission drain bolt.
    • Allow oil to drain completely.
    • Replace the crush washer here as well.
    • Be sure not to confuse the bolts; double-check their placement for reinstallation.
  4. Change the Oil Filter
    • The oil filter is usually under a small cover (left side of engine).
    • Remove the bolts holding the cover; carefully remove the old oil filter and O-rings.
    • Wipe the housing clean with a fresh rag.
    • Install the new filter and O-rings, ensuring proper orientation (there may be a spring behind the filter).
    • Reinstall and hand-tighten the filter cover bolts.
  5. Reinstall Drain Bolts
    • Replace crush washers as needed.
    • Install the engine and transmission drain bolts by hand, then snug tight with your wrench.
    • Use a torque wrench to finish: do not overtighten—Honda specs are typically around 12 N·m (consult your manual).
  6. Fill Fresh Oil
    • Using a funnel, pour 590cc of 10W-40 oil into the engine side (do not exceed; check markings).
    • Pour 580cc of 10W-40 oil (or recommended transmission oil) into the transmission side

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    • Replace both caps securely.
  7. Check for Leaks & Final Levels
    • Clean any spilled oil.
    • Start the engine and let it run for 2–3 minutes.
    • Shut off and wait a few minutes, then check oil level with the dipstick (engine side) and the sight glass or level plug (transmission side)

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    • Top off if necessary, but do not overfill.
    • Check for leaks around drain bolts and the filter cover.

Expert Tips for the 2022 CRF150R Big Wheel

  • Do not mix engine and transmission oil; keep fluids compartmentalized.
  • Always use new crush washers to prevent future leaks

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  • Be gentle with aluminum drain bolts; torque to manufacturer specs to avoid stripping threads.
  • If riding in extreme conditions (dust, mud, racing), consider changing both oils more frequently.
  • Check your owner’s manual for updated specs if you own a bike modified from stock

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Regular, correct oil changes maximize your CRF150R Big Wheel’s reliability and performance. For more OEM parts, fluids, and expert guides, rely on MotoSport.com to keep you riding strong.

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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.