How to Change the Oil in a 2016 Suzuki DRZ400SM

Shop parts for a 2016 Suzuki DRZ400SM Dirt Bike.

Changing the oil in your 2016 Suzuki DRZ400SM is an essential maintenance task that prolongs engine life and ensures peak performance. This guide, proprietary to MotoSport.com, delivers a step-by-step process tailored for your bike, including tools required, expert tips, and DR-Z400SM-specific call-outs.

Tools and Supplies Needed

  • Ratchet
  • Socket Set:– 8mm, 12mm, and 17mm sockets
  • Torque Wrench
  • Drain Pan
  • Oil Filter (specific to DRZ400)
  • 10W-40 Motorcycle Oil (2 quarts)
  • Gloves (recommended for cleanliness and safety)
  • Rags or Shop Towels
  • Funnel
  • New crush washers for drain bolts (optional but recommended)

Steps to Change the Oil

  1. Warm Up the Engine

    Start your motorcycle and let it idle for 2–3 minutes to warm up the oil. Warm oil drains more effectively, carrying impurities with it.

  2. Remove the Oil Filler Cap/Dipstick

    Unscrew and remove the oil filler cap/dipstick from the frame’s top tube, just above the cylinder. This vents the frame and allows oil to drain freely.
    DRZ400SM Specific:– The oil filler is located on the frame tube, not directly on the crankcase. This is unique to the DRZ400/SM family and ensures thorough draining.
    Tip:– Place the cap somewhere clean and safe to avoid contamination.
    Reference:–

  3. Drain the Crankcase Oil

    Place your drain pan under the engine and locate the 17mm drain bolt on the bottom of the crankcase. Use your 17mm socket to remove the bolt and washer. Allow the oil to drain completely.
    Inspection:– Check the crush washer and replace if damaged or flattened to prevent leaks.
    Reference:–

  4. Reinstall the Crankcase Drain Bolt

    Once drained, reinstall the bolt (with a new washer if needed) and use your torque wrench to tighten it to 15 ft-lbs.

  5. Drain the Frame Oil

    Move the pan under the lower front frame tube. Remove the 12mm drain bolt and washer from the bottom of the frame. Allow the frame oil to drain.
    DRZ400SM Specific:– The DRZ400SM features a split oil sump with oil in both the frame and crankcase, unlike many other motorcycles. Be sure to drain both locations.
    Reference:–

  6. Inspect and Reinstall Frame Drain Bolt

    As with the crankcase, examine the washer and replace if needed. Reinstall the drain bolt and tighten to spec.

  7. Replace the Oil Filter

    Locate the oil filter cover (right-hand side of the engine). Use the 8mm socket to remove the cover bolts. Carefully remove the old oil filter and clean the inside of the cover.
    Tip:– Inspect the O-ring. Replace it if visibly worn or damaged to prevent leaks.
    Insert the new oil filter, ensuring correct orientation (rubber gasket faces out). Reinstall the cover securely.

  8. Add New Oil

    Use a funnel for precision. Fill with 10W-40 motorcycle oil.
    Capacities:–

    • Oil and filter change:– 1.8 liters (1.9 US quarts)
    • Oil-only (no filter):– 1.7 liters (1.8 US quarts)
    Pour the initial amount, then check and top off as needed.
    Reference:–

  9. Check Oil Level

    Reinsert the oil filler cap/dipstick, remove it, and check the level. Add oil if needed, but avoid overfilling.

  10. Start and Inspect

    Start your DRZ400SM and idle for 5 minutes. Shut it off, allow oil to settle for a few minutes, and recheck the oil level.
    Add more if required. Visually inspect all drain plugs and the filter cover for any leaks.
    Reference:–

  11. Final Checks

    Wipe down any oil spills, reinstall skid plate (if removed), and dispose of old oil and filter responsibly.

2016 DRZ400SM–Specific Call–Outs

  • Your DRZ400SM uses both the frame and crankcase for oil storage – always drain both to avoid overfilling or dilution with old oil.
  • Suzuki recommends oil changes after the first 600 miles, then every 3,500 miles or once per season. Frequent and off-road riders should consider shorter intervals. Refer to your owner’s manual for specifics.
    Reference:–
  • Always inspect the “frame filter screen”, a hidden mesh screen in the frame’s oil drain circuit. Clean it during oil changes for optimal oil delivery and to catch debris. This is an often-neglected step among DRZ owners.
    Reference:–
  • Use only motorcycle-specific oil that meets or exceeds SAE 10W-40 SF or SG standards. Car oil can damage the wet clutch.
    Reference:–

Conclusion

The 2016 Suzuki DRZ400SM has a robust, simple oil change procedure, but attention to details like draining both sumps and cleaning the frame filter screen is what sets apart good maintenance. Regular oil changes using the right products and processes ensure you get maximum performance and longevity from your DRZ400SM.
Let MotoSport.com be your source for OEM and performance parts to keep your Suzuki 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.