How to Change the Oil in a 2015 KTM 500 EXC

Shop parts for a 2015 KTM 500 EXC Dirt Bike.

The KTM 500 EXC is a legendary dual-sport machine, renowned for its performance and reliability. Regular oil changes are key to long engine life and optimal power delivery. This guide will walk you step-by-step through a robust oil change procedure specifically for the 2015 KTM 500 EXC, highlighting necessary tools and model-specific tips for a flawless job.

Tools & Materials Needed

  • 13 mm socket (for the drain bolt)
  • 8 mm socket or T-bar (for oil filter cover bolts)
  • Pliers (for oil screens–be gentle.)
  • Oil drain pan
  • Funnel (optional but highly recommended for pouring oil cleanly)
  • Clean rags/towels
  • New oil filter (OEM recommended)
  • Motorex 10W-50 synthetic oil (KTM’s recommended grade)
  • Replacement crush washers (recommended)
  • Torque wrench (for precise reinstallation of bolts)
  • Owner’s manual (always handy for reference)

Preparation

  • Run the engine for a few minutes to warm up the oil—this will help it drain more completely.
  • Place the motorcycle on a level stand to ensure stability.
  • If you have one, remove the bash plate (skid plate) for easier access and cleaner draining. This is particularly useful on 2015–2016 models, as the oil tends to run along the plate otherwise (2016 procedure, applies to 2015).

Draining the Engine Oil

  • Position the oil drain pan underneath the engine.
  • Remove the main drain plug (13 mm) at the bottom of the crankcase. Allow oil to drain completely.
  • Inspect the magnet on the drain plug for metal shavings. Wipe it clean before reinstalling.
  • Remove the first oil screen with pliers. Note its orientation (it’s directional.), and be careful not to damage it. Clean it with a rag or mild solvent.
  • Locate and remove the second oil screen (sometimes referred to as the “third drain plug” in some guides, located further back under the engine). This is also directional and should be reinstalled exactly as removed. Clean thoroughly.

Changing the Oil Filter

  • Use an 8 mm socket to remove the two bolts holding the oil filter cover (located on the right-hand side of the engine).
  • Carefully pull the cover off. If it’s stuck, use a rag and pliers to wiggle it free.
  • Remove the old oil filter and discard it properly.
  • Lubricate the gasket of the new oil filter with fresh oil and install it in the proper orientation.
  • Reinstall the filter cover and bolts. Be careful not to overtighten—the correct torque is 8 Nm (check your manual for confirmation).

Refilling with Fresh Oil

  • Replace both oil screens and the drain bolt, using new crush washers if possible. Tighten to manufacturer specs: oil screens (15 Nm), main drain plug (20 Nm).
  • Make sure the bike is upright and level.
  • Pour in Motorex 10W-50 synthetic oil through the oil fill cap on the right side of the engine.
  • The total oil capacity for the 2015 KTM 500 EXC is 1.2 liters (1.2L). Start by adding around 1 liter, then check the level using the sight glass or dipstick, topping off as needed.
  • Replace the oil fill cap securely.

Final Inspection & Cleanup

  • Start the engine and let it idle for a minute. Check for oil leaks around the drain bolt, oil screens, and filter cover.
  • Shut the engine off and let the oil settle for 1–2 minutes. Re-check the oil level and top up if necessary.
  • Properly dispose of old oil and filter at your local recycling center.
  • Reinstall your bash plate if you removed it earlier.

Model-Specific Tips and Call-outs for 2015 KTM 500 EXC

  • For 2015, the oil change procedure is identical to the 2016 model, so most video and PDF guides apply directly.
  • Always check the direction of both oil screens. Installing these backwards can impede oil flow and cause engine damage.
  • Be gentle with the oil screen o-rings and replace if they show signs of wear or cuts. A leaking o-ring can result in rapid oil loss.
  • Do not overtighten the drain bolts or filter cover. The crankcase threads are aluminum and can strip easily. Always use a torque wrench.
  • For expedition or adventure riding, some experience suggests oil change intervals may be extended slightly (to 20–25 hours of normal use), but frequent changes are best for engine longevity. Always adhere to KTM’s official recommendation for aggressive or race use (every 15 hours).

Conclusion

Changing the oil on your 2015 KTM 500 EXC is simple and straightforward with the right tools and a little preparation. Paying attention to model-specific details, torques, and directions will keep your bike running reliably season after season. If any step feels unfamiliar or difficult, always consult your owner’s manual or contact a KTM-certified technician.

This guide is proprietary to MotoSport.com and intended for the KTM 500 EXC, 2015 model year. Always wear gloves and eyewear when performing maintenance.

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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.