How to Change the Oil in a 2018 Suzuki DR650SE

Shop parts for a 2018 Suzuki DR650SE Dirt Bike.

Keeping the oil fresh in your 2018 Suzuki DR650SE is essential for peak engine health and performance. Follow this step-by-step MotoSport.com proprietary guide and you’ll complete your oil and filter change confidently while protecting your investment.

Tools and Supplies Needed

  • 17mm socket and ratchet (for drain bolt)
  • 8mm socket and ratchet (for oil filter cover)
  • Oil drain pan
  • Funnel
  • New oil filter (specific for Suzuki DR650SE)
  • Replacement oil: 2.5 quarts of 10W-40 engine oil (semi- or full-synthetic is suitable)
  • New oil filter O-ring (included with many filters)
  • New drain bolt washer (recommended but not strictly required every service)
  • Rags for cleanup
  • Torque wrench (optional but preferred for accuracy)
  • Gloves to keep it clean

Important Model-Specific Call-Outs

  • The DR650SE, 1996 and later–including 2018–use the same procedure for oil changes and filter replacements.
  • This engine requires 2.4–2.5 liters (2.5 quarts) of oil when changing both oil and filter.
  • The oil filter cap uses an O-ring; inspect and lubricate it before reinstallation.
  • Always reference your owner's manual for confirmation of specs and recommended oil type and quantities.

Step-by-Step Oil Change Procedure

  1. Warm up the engine.
    • Let the bike idle for a few minutes to warm the oil. This helps contaminants flow out and assures full drainage.
  2. Turn off the motorcycle and secure it upright.
    • Either use the stock kickstand on level ground or a motorcycle lift/stand for maximum safety.
  3. Place an oil drain pan below the drain plug.
    • 2018 DR650SE: The drain plug is located under the front-left engine case. Position the pan to catch the oil flow.
  4. Remove the oil drain bolt.
    • Use the 17mm socket and ratchet to loosen and remove the plug. Allow oil to drain fully. Replace the washer with a new one if available.
  5. Remove the oil filler cap (on top of the right engine case).
    • This upstream venting allows oil to flow out more quickly.
  6. Change the oil filter.
    • Use an 8mm socket to remove the three bolts holding the oil filter cover (right side, up front).
    • Carefully remove the cover and note the orientation of the spring and filter. The filter slides right out.
    • Check the O-ring on the cover. If undamaged, it can be reused (factory recommends inspecting every time). Lightly coat with fresh oil before reinstalling.
    • Install the new filter (open end facing out) and reassemble cover, ensuring the spring is correctly positioned and the O-ring isn’t pinched.
  7. Reinstall the drain bolt.
    • Screw the plug in by hand, then torque to factory specs: 24 Nm (17.7 lb-ft).
  8. Add new oil.
    • Using a funnel, pour in 2.4–2.5 quarts (approximately 2.5 liters) of fresh 10W-40 oil.
    • Replace the oil filler cap.
  9. Start the engine and check for leaks.
    • Let the bike idle for a few minutes, watching carefully for leaks around the drain plug and filter cover.
  10. Check oil level.
    • Turn off the engine and let it sit for about a minute.
    • Hold the bike upright; oil level should be visible in the sight glass on the right engine cover. The level should fall between the upper and lower marks.
    • Add a small amount of oil if necessary. Do not overfill.
  11. Dispose of used oil and filter responsibly.
    • Bring both to your local recycling center or auto parts store that accepts waste oil.

Troubleshooting & Tips

  • If you lose or damage the oil filter O-ring, replace before reassembly—leaks can cause engine failure.
  • "Crush" washer on drain plug should be replaced periodically for best sealing.
  • Don’t over-tighten filter cover bolts; you risk stripping the threads.
  • Keep the area around the oil filter cavity clean to prevent debris from entering the engine.
  • If unfamiliar with working on motorcycles, photograph assembly steps with your phone for reference during reinstallation.

Conclusion

Following this MotoSport.com guide for your 2018 Suzuki DR650SE will ensure thorough, mess-free, and reliable oil changes—protecting your adventure machine for the miles ahead.

Related Shopping Categories

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Shop Oil Fillers and Drain Plugs for a 2018 Suzuki DR650SE 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.