How to Change the Oil in a 2023 Suzuki DRZ400SM

Shop parts for a 2023 Suzuki DRZ400SM Dirt Bike.

Keeping your Suzuki DRZ400SM’s oil fresh is crucial for optimal engine performance & longevity. This step-by-step blog is tailored specifically for the 2023 DRZ400SM, with proprietary instructions for MotoSport.com readers. Follow along to ensure your oil change goes smoothly every time you get in the garage.

Tools and Materials Needed

  • Ratchet
  • Sockets:– 8mm, 12mm, 17mm (and optionally 10mm, 14mm)
  • Torque wrench
  • Oil drain pan
  • Gloves and safety glasses
  • Rags or shop towels
  • Funnel
  • Oil filter:– Hiflofiltro HF139 or OEM equivalent
  • Fresh oil:– 2 quarts (SAE 10W-40, SF or SG spec, motorcycle oil)
  • New crush washers for drain bolts (recommended but optional)
  • Copy of your OEM service manual for reference

Preparation and Special Call-Outs for 2023 DRZ400SM

  • The oil change procedure for the 2023 DRZ400SM is nearly identical to all DRZ400 models from prior years since Suzuki has kept the design and locations unchanged for years. This ensures that all recommended techniques and safety protocols remain applicable to your specific model year (even the 2023).
  • Do not screw in the dipstick when checking oil level–simply insert it in the hole and remove to check the level for an accurate reading

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  • Always torque your drain bolts correctly to prevent overtightening and gasket failure. A digital or click-type torque wrench is recommended for precision.
  • The DRZ400SM has two oil drain plugs: One on the engine case, one on the lower frame. Draining both is crucial for a complete oil change

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Step-by-Step Instructions

  1. Warm Up the Engine (Optional)

    Start your bike and let it idle for about 3 minutes. This thins the oil, helping it drain more completely. Shut off the engine and allow the bike to cool slightly to avoid burns.

  2. Remove the Oil Filler Cap/Dipstick

    Remove the oil filler cap/dipstick from the top of the frame to vent the system. This creates a vacuum, enabling oil to flow out faster and more thoroughly during draining

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  3. Drain Engine Oil from Crankcase

    • Place your drain pan under the crankcase.
    • Use the 17mm socket to remove the drain bolt (located just behind the shift lever) and its washer

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    • Let all oil drain completely.

  4. Drain Oil from Frame

    • Move your drain pan under the drain bolt on the frame (lower section, near the front down tube).
    • Use the 12mm socket to remove this bolt and its washer; drain remaining oil

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    • Inspect both drain bolt washers. Replace if crushed, cracked or excessively worn.

  5. Remove and Replace the Oil Filter

    • Locate the oil filter cover on the right side of the engine (secured by 8mm bolts).
    • Remove bolts, then the cover and old oil filter.
    • Wipe out the filter cavity with a clean rag.
    • Lubricate the rubber seal on your new filter with a touch of fresh oil, and install it.
    • Reinstall the cover and tighten the bolts evenly. No need to overtighten.

  6. Reinstall Drain Bolts

    • Install/replace crush washers onto both drain bolts.
    • Thread each bolt in by hand to avoid cross-threading, then torque to specification:
      • Crankcase drain bolt:– 15 ft-lb (20 Nm)

      • Frame drain bolt:– 15 ft-lb (20 Nm)

  7. Add New Oil

    • Using a funnel, add about 1.9 quarts (1.8L to 2.0L) of SAE 10W-40 motorcycle oil. It is safe to round up to 2 quarts. Suzuki recommends oil that meets SF or SG spec

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    • Wait a couple minutes for oil to settle into the engine and frame.

  8. Check Oil Level

    • Insert (do not screw in) the dipstick and remove to check level. Top off as needed.
    • Run the engine for 2-3 minutes, then shut off and check for leaks at the drain bolts and filter.
    • Recheck the oil level and adjust as necessary

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  9. Final Checks and Clean Up
    • Replace the dipstick/filler cap.
    • Wipe up any oil drips and dispose of old oil properly—never pour used oil down the drain or onto the ground.
    • Record the service in your maintenance log for reference. The DRZ400SM should have its oil changed every 3,500 miles or 6 months—whichever comes first, after the initial service at 600 miles

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Model-Specific Tips for DRZ400SM (2023)

  • No significant changes in internal design or oiling system since the platform was launched, so even aftermarket oil filters and crush washers will fit across multiple year ranges (E, S, and SM models)

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  • Double-check for a "secret" third filter (sometimes called a screen or strainer) in the bottom of the frame if you wish to perform a more complete service. This is rarely dirty but can be cleaned every few oil changes for peace of mind

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Conclusion

Changing the oil on your 2023 Suzuki DRZ400SM is an easy job that pays off every mile you ride. Use high-quality oil and filters, torque your fasteners, and keep up on regular intervals. For more Suzuki maintenance resources or exclusive dirt bike parts and tools, shop MotoSport.com—your home for everything motorcycle.

Related Shopping Categories

Shop Motor Oil for a 2023 Suzuki DRZ400SM Dirt Bike.

Shop Oil Filters for a 2023 Suzuki DRZ400SM Dirt Bike.

Shop Oil Drain Pans for a 2023 Suzuki DRZ400SM Dirt Bike.

Shop Tools for a 2023 Suzuki DRZ400SM Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2023 Suzuki DRZ400SM 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.