How to Change the Oil in a 2023 Suzuki DR-Z400SM

Shop parts for a 2023 Suzuki DR-Z400S Dirt Bike.

Regularly changing the oil in your 2023 Suzuki DR-Z400SM is essential to ensure smooth operation, engine longevity, and top performance on any adventure. This step-by-step guide is brought to you by MotoSport.com and covers everything you need, along with model-specific tips to keep your DR-Z400SM in peak shape.

Tools and Supplies Needed

  • Ratchet
  • 8mm, 10mm, 12mm, and 17mm sockets
  • Torque wrench
  • Oil drain pan
  • Gloves and safety glasses
  • Rags for cleanup
  • Funnel
  • Replacement oil filter
  • Crush washers for drain bolts (recommended every oil change)
  • 2 quarts of 10W-40 motorcycle oil

Pro tip:– Most DR-Z400SM owners find a quality synthetic oil performs best for intense rides and hot climates. Always use motorcycle-specific oil.

Preparation

  • Start your DR-Z400SM and let it idle for three to five minutes. Warm oil flows and drains more completely.
  • Turn the engine off, place the bike in neutral, and set it on a stable surface. A motorcycle stand helps, but a block of wood under the kickstand will help balance the bike and improve drainage.

Step-By-Step Oil Change Instructions

  1. Remove the oil filler cap/dipstick from the top of the frame. This allows air to enter and lets oil drain easier.
    Important:– When checking the oil level later, place the dipstick in but do not screw it down. This is a Suzuki specification for accurate measurement.
  2. Place your oil drain pan below the crankcase. Using a 17mm socket, carefully remove the crankcase drain bolt and washer–located on the engine bottom.
    Let the oil drain completely.
  3. Check the drain bolt's washer. If the crush washer is worn or damaged, replace it to prevent leaks. Reinstall the bolt and washer, then torque to 15 ft-lb with your torque wrench.
  4. Move the drain pan beneath the lower frame. Using a 12mm socket, remove the frame's oil drain bolt and washer. Allow oil to drain fully from the frame reservoir.
    Inspect and replace the frame drain washer if needed. Reinstall and torque the bolt as per your owner's manual–again, typically 15 ft-lb.
  5. Remove the skid plate (if installed) to access the oil filter. Remove the oil filter cover (three 8mm or 10mm bolts). Take out the old oil filter.
  6. Check the O-rings on the oil filter cover for wear or tears. Replace them if damaged.
  7. Install a new oil filter. Ensure the filter's arrow faces up (follow the marking on Suzuki OEM filters). Replace the cover and torque the bolts evenly and gently to prevent warping.
  8. Fill with fresh oil. Use a funnel and pour in 1.9–2.0 quarts (1,800–2,000 ml) of 10W-40 motorcycle oil into the frame filler neck.
    Go slowly and check with your dipstick. Remember: the correct level is measured by inserting, not screwing in the dipstick.
  9. Start the engine and let it idle for 30 seconds, then turn off. Wait a few minutes. Recheck the oil and top off if needed.
  10. Check for leaks at all bolt locations and around the oil filter cover. Tighten if necessary.
  11. Dispose of old oil and filter properly at your local recycling facility.

2023 DR-Z400SM-Specific Details

  • The DR-Z400SM uses a dry sump system, storing oil in the frame. Don't skip draining the frame, or you'll leave old oil in the system.
  • Check your skid plate for drain plug cutouts. Many aftermarket plates block access to drains–removal may be necessary for a clean oil change.
  • Change the oil every 3,500 miles or sooner if you ride aggressively or frequently off-road.
  • If you ride in harsh or muddy conditions, changing the oil and filter more often is recommended.

Extra Tips for Best Results

  • Always have the correct service manual handy for torque values and specs.
  • Double-check O-ring and washer condition each change–they protect from leaks and pressure loss.
  • Record your oil changes and miles for maintenance history.

With regular oil changes, your 2023 Suzuki DR-Z400SM will stay ready for every trail and city street ride ahead. For all your maintenance needs and parts, trust MotoSport.com–the dirt bike authority.

Related Shopping Categories

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Shop Tools for a 2023 Suzuki DR-Z400S Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2023 Suzuki DR-Z400S 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.