How to Change the Oil in a 2020 Suzuki DR-Z400SM: The Complete Guide for MotoSport.com Riders

Shop parts for a 2020 Suzuki DR-Z400SM Dirt Bike.

Regular oil changes are vital to keep your 2020 Suzuki DR-Z400SM running strong, reliable and ready for your next ride. This step-by-step guide covers everything you need to know, including all specific callouts for the DR-Z400SM so you get the job done like a pro.

Tools & Supplies Needed

  • Ratchet and sockets (8mm, 12mm, 17mm)
  • Torque wrench
  • Drain pan
  • Oil filter
  • 10W-40 motorcycle oil (2 quarts/recommended 1.8 liters with filter change, 1.7L without filter change)
  • Funnel
  • Gloves and shop rags
  • OEM service manual (for reference and specs)

Optional but recommended: Replacement drain bolt washers/gaskets, safety glasses.

DR-Z400SM Model-Specific Oil Change Tips

  • The DR-Z400SM shares its engine oil configuration with DR-Z400S/E models, so most guides apply directly.
  • You need to drain oil from both the crankcase and the lower frame rail for a complete change.
  • Double-check the hidden frame filter screen (see below – Pro Tip).
  • Tighten drain bolts to specification—overtightening can strip threads.

Step-by-Step Oil Change Procedure

  1. Warm up the engine:
    • Start the bike and let it idle for 2-3 minutes. This helps oil drain more thoroughly by reducing viscosity.
    • Turn off the engine and let it cool for a few minutes before touching any hot surfaces.
  2. Remove the oil filler cap/dipstick:
    • Locate the cap on the top tube of the frame (right-side, near the steering head).
    • Unscrew and set aside; this vents the system and makes draining easier.
  3. Drain the crankcase oil:
    • Position your drain pan under the engine's crankcase drain bolt (17mm) located at the bottom of the engine.
    • Use your ratchet and appropriate socket. Remove the bolt and washer.
    • Allow all oil to drain—wait until the flow reduces to a slow drip.
    • Inspect and replace the washer if damaged. Wipe clean. Reinstall, torque to 15 ft-lbs (check your service manual for spec).
  4. Drain the frame oil:
    • Move the drain pan under the lower part of the frame rail (12mm drain bolt).
    • Remove bolt and washer, allow oil to drain fully.
    • Again, inspect the washer for damage. Replace if needed, then reinstall and torque to specification.
  5. Change the oil filter:
    • The oil filter cover is usually held by three small bolts—remove these and gently pull off the cover.
    • Take out the old oil filter. Wipe the cover and mating surfaces clean.
    • Insert the new oil filter (ensure correct orientation—check for any spring fitment as per the manual).
    • Reinstall the cover, tightening bolts evenly. Do not overtighten; snug is sufficient unless otherwise specified.
  6. PRO TIP: Hidden Frame Oil Screen Filter
    • Some guides recommend checking the smaller filter screen on the frame rail (above the main frame drain bolt).
    • It’s a screen, not a paper filter, and only needs inspection/cleaning, not replacement. Consult the service manual for specifics.
  7. Add new oil:
    • With both drain bolts replaced and tight, place a funnel in the frame’s oil fill cap opening.
    • Add 1.8 liters (1.9 US quarts) if you changed the oil filter; use 1.7 liters if not replacing the filter.
    • Reinstall and tighten the oil filler cap/dipstick.
  8. Check the oil level and for leaks:
    • Start the bike and let it idle for 3-5 minutes. Check for leaks under the bike.
    • Turn off the bike, wait a few minutes for oil to settle, then check the level using the dipstick. Adjust as necessary (never overfill).
  9. Test ride and final check:
    • Reinstall skid plate or any other parts you removed to access the drain bolts.
    • Take a short test ride, then inspect for leaks again and final oil level. Top off as needed.

Additional DR-Z400SM Oil Change Tips

  • Always use motorcycle-specific oil—automotive oil can harm your clutch.
  • Tighten all bolts to specification—over/undertightening leads to problems.
  • Dispose of oil responsibly—never pour down a drain; take to a recycling facility.

Conclusion

Changing the oil on your 2020 Suzuki DR-Z400SM is straightforward with the right tools and a little attention to detail. Following this guide, you’ll ensure maximum life for your engine and enjoy better performance on every ride. For more OEM parts and riding tips, trust MotoSport.com.

Related Shopping Categories

Shop Motor Oil for a 2020 Suzuki DR-Z400SM Dirt Bike.

Shop Oil Filters for a 2020 Suzuki DR-Z400SM Dirt Bike.

Shop Oil Drain Pans for a 2020 Suzuki DR-Z400SM Dirt Bike.

Shop Tools for a 2020 Suzuki DR-Z400SM Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2020 Suzuki DR-Z400SM 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.