How to Change the Oil in a 2013 Suzuki DR-Z400SM

Shop parts for a 2013 Suzuki DR-Z400SM Dirt Bike.

Routine oil changes are an essential part of keeping your 2013 Suzuki DR-Z400SM running smoothly. The DR-Z400SM’s straightforward design means riders can change the oil at home with minimal tools and no special experience. Below you’ll find a detailed, step-by-step guide exclusive to MotoSport.com, including the necessary tools, required parts, and special tips for this specific model.

Tools and Parts Needed

  • Ratchet set
  • 8mm, 12mm, and 17mm sockets
  • Torque wrench
  • Oil drain pan
  • Rags or shop towels
  • Gloves and safety glasses (recommended)
  • Funnel
  • New oil filter
  • Engine oil - 10W-40 motorcycle oil (you’ll need just under 2 quarts, 1.8L with filter, 1.7L without)
  • Replacement crush washers for drain bolts (if needed)

Important Model-Specific Call-Outs

  • The 2013 DR-Z400SM oil procedure is the same as all DR-Z400S/SM models since their release; Suzuki hasn’t changed the oiling or drain design. If you have a service manual from another year, the process still applies.
  • This bike features two separate drain bolts: one on the crankcase, one on the frame. It’s important to drain both to ensure a complete oil change.
  • The DR-Z400SM also uses a “secret” frame screen filter in the downtube of the frame; checking and cleaning it during an oil change is highly recommended, especially if it’s your first time changing the oil or if it’s been neglected.
  • Suzuki recommends the first oil change at 600 miles and then every 3,500 miles or as needed based on your riding style.

Step-by-Step Oil Change Instructions

  1. Warm up the engine
    • Start the bike and let it idle for a few minutes. This helps the oil flow out more easily and brings contaminants into suspension.
    • Turn off the engine and place the bike securely on a stand.
  2. Remove the Oil Filler Cap/Dipstick
    • This is located at the top of the frame (just behind the steering head).
    • Unscrew it–this will vent the system so the oil drains faster.
  3. Drain the Engine Crankcase Oil
    • Position your oil drain pan under the engine.
    • Using a 17mm socket, remove the crankcase drain bolt and washer (on the left underside of the engine). Allow oil to drain completely.
    • Inspect the bolt’s crush washer–replace if damaged.
    • Once oil has drained, reinstall the drain bolt and washer, torque to 15 foot-pounds.
  4. Drain the Frame Oil
    • Locate the frame drain bolt (under the right side of the lower frame tube).
    • Use a 12mm socket to remove this bolt and washer; drain remaining oil.
    • Check this bolt’s washer and replace if needed.
    • Reinstall and torque the frame drain bolt appropriately (refer to your manual, generally “reasonably tight” if you don’t have a torque spec).
  5. Optional: Clean the Frame Oil Filter Screen
    • Using an 8mm socket, remove the screen access bolt on the downtube.
    • Use a pick or small pliers to pull out and inspect the screen.
    • Clean any debris and reinstall it carefully.
  6. Replace the Oil Filter
    • Locate the oil filter cover on the right side of the engine.
    • Remove the cover bolts (usually 8mm socket). Take care not to lose the spring or O-ring.
    • Remove the old filter, wipe the cavity clean, and install a new one in the correct orientation.
    • Reinstall the cover, ensuring the O-ring is properly seated.
    • Torque bolts carefully—do not overtighten.
  7. Add New Oil
    • Insert a funnel into the oil filler hole. Pour in 1.8 liters (1.9 US quarts) of 10W-40 oil if you replaced the oil filter; use1.7 liters (1.8 US quarts) if you did not.
    • Reinstall the filler cap/dipstick.
  8. Run the Engine and Check Oil Level
    • Start the bike and let it idle for 4–5 minutes to distribute oil throughout the engine and filter housing.
    • Shut off the engine and wait 2–3 minutes for oil to settle.
    • Remove the dipstick, wipe it clean, reinsert (do not thread), and check the oil level. Add oil if needed. Avoid overfilling.
  9. Inspect for Leaks & Reinstall Skid Plate (if removed)
    • Look around the drain plugs and oil filter area to ensure there are no leaks before riding.
    • Reinstall any skid plate or engine guards if taken off.
  10. Dispose of Old Oil Responsibly
    • Take the used oil and filter to a local recycling facility or auto parts store with recycling services.

Tips and Warnings

  • Always verify oil level after the first ride post-change. The DR-Z400SM’s dry-sump system can sometimes require a small top-off after oil fully circulates.
  • Never overtighten drain bolts—stripped threads are a common issue with this model if over-torqued.
  • Use only motorcycle-specific oil suitable for wet clutches; car oils may cause clutch slippage.
  • If it’s the first service, ensure you change the oil at 600 miles and clean/inspect the frame screen for manufacturing debris.

Changing the oil on your 2013 Suzuki DR-Z400SM is straightforward with the right tools and some patience. Stick to the manufacturer’s recommended schedule and enjoy dependable performance on every ride.

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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.