How to Change the Oil in a 2016 Suzuki DR-Z125L

Shop parts for a 2016 Suzuki DR-Z125L Dirt Bike.

This comprehensive, proprietary MotoSport.com guide walks you through every step needed to change the oil in your 2016 Suzuki DR-Z125L. Follow these steps to keep your dirt bike running at peak performance.

Tools and Supplies Needed

  • 10mm socket (for oil filter cover bolts)
  • 17mm socket (for oil drain bolt)
  • Torque wrench (recommended, 20.5 lb-ft for drain bolt torque)
  • Rubber or nitrile gloves (to protect hands from oil)
  • Oil catch pan
  • Funnel
  • Paper towels and rags
  • New oil filter (recommended to replace at each change)
  • 1 quart (950 ml) of 10W-40 motorcycle oil

Preparation & Safety Call-outs

  • Warm the engine for 5-10 minutes to help oil drain thoroughly. Never change oil on a hot engine to avoid burns.
  • Place the bike on its side stand on level ground. If possible, stand the bike vertical when draining oil for best results.
  • Keep used oil and oil filters away from children and pets. Wear gloves and long sleeves to minimize exposure. Wash skin right after contact with oil.
    Note: Engine oil and exhaust components can burn you—let them cool before starting the oil change.

Step-by-Step Instructions

  1. Remove Oil Filler Cap
    • Locate the oil filler cap on the engine and remove it. This helps the oil drain smoothly.
  2. Position Oil Catch Pan
    • Set the catch pan directly under the drain plug, found on the bottom of the engine.
  3. Remove the Oil Drain Plug
    • Using a 17mm socket, remove the drain bolt and gasket. Apply upward pressure while unscrewing to prevent oil from splashing everywhere.
    • Let the oil drain completely. Standing the bike up vertically at this stage helps remove any remaining old oil.
  4. Remove and Replace the Oil Filter
    • Locate the oil filter cover (typically held by three 10mm bolts). Remove these with the 10mm socket.
    • When you take the cover off, some oil may still drip—keep your pan in place.
    • Carefully pull the old oil filter out. There is a seal (O-ring) around the oil filter cover—make sure it does not fall out or get damaged. Wipe away any sludge or debris inside the filter housing with a clean paper towel.
    • Install the new oil filter in the correct orientation, reusing the O-ring if it is undamaged, or replacing it if necessary.
    • Reinstall the filter cover and torque the bolts snugly but do not overtighten.
  5. Reinstall Oil Drain Plug
    • Once oil stops dripping, reinstall the drain plug and its gasket by hand. Use the torque wrench to tighten to 20.5 lb-ft. Do not overtighten to avoid damaging threads.
  6. Add New Oil
    • Using a funnel, add 950 ml (1 quart) of 10W-40 motorcycle oil, or as specified in your owner's manual.
    • If changing only the oil (not the filter), use 850 ml. If changing the oil and filter, use 950 ml.
      Tip: Use a measuring cup for accuracy.
    • Replace the filler cap.
  7. Run the Engine and Check for Leaks
    • Start the bike and let it idle for 2-3 minutes. Check underneath for leaks at the drain plug and oil filter.
    • Turn off engine and allow it to sit for one minute so oil settles.
  8. Check Oil Level
    • With the bike vertical, remove the dipstick, clean it, reinsert, and check the oil level. Add more oil as needed but do not overfill.
  9. Dispose of Old Oil and Filter
    • Transfer used oil to a sealed container and recycle at a local facility. Do not dispose of oil in the trash, on the ground, or down drains.

2016 Suzuki DR-Z125L Specific Notes

  • "L" designates a larger wheel and longer suspension compared to the base DR-Z125, but the oil change procedure, oil amounts, and bolt locations are identical.
  • Oil Drain Plug Location: Underneath, easily accessible with 17mm socket—do not confuse with other engine bolts.
  • Be sure to use the correct crush washer/gasket with the drain plug to prevent leaks.
  • If removing the oil cap is difficult, use the handle of a pair of pliers for extra leverage, but do not use excessive force to avoid damage.
  • Oil filter orientation matters—follow the arrow or instruction in manual to align properly.

Common Questions

  • Should I change the oil filter at every oil change?
    Suzuki recommends changing the oil filter at least every other oil change for optimal engine protection, but many riders do it every time for peace of mind.
  • How often should I change the oil?
    For regular trail or off-road riding, change the oil every 10-15 hours of riding, or at least once per season.

Wrap-Up and Inspection

  • Run through all bolts and caps to confirm tightness before riding.
  • Check for oil leaks around the filter cover and drain plug after the first ride.
  • Record your maintenance so you'll know your schedule for the next change.

Proper routine maintenance like oil changes is the best way to ensure your Suzuki DR-Z125L delivers maximum performance on every ride—get all your dirt bike maintenance parts and oils from MotoSport.com.

Related Shopping Categories

Shop Motor Oil for a 2016 Suzuki DR-Z125L Dirt Bike.

Shop Oil Filters for a 2016 Suzuki DR-Z125L Dirt Bike.

Shop Oil Drain Pans for a 2016 Suzuki DR-Z125L Dirt Bike.

Shop Tools for a 2016 Suzuki DR-Z125L Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2016 Suzuki DR-Z125L 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.