How to Change the Oil in a 1995 KTM 250EXC

Shop parts for a 1995 KTM 250EXC Dirt Bike.

Changing the oil in your 1995 KTM 250EXC is an essential maintenance task to keep your bike running at peak performance and prolong engine life. This how-to guide—exclusive to MotoSport.com—gives you all the steps, tools, and tips you need, including specific call-outs unique to your model year.

Tools and Supplies Needed

  • Metric T-handle or socket set (for drain plug removal)
  • Torque wrench (capable of measuring 20 Nm / 14.8 ft-lbs)
  • Oil drain pan or catch can
  • Funnel
  • New crush washer for drain plug
  • Clean rags or shop towels
  • 0.8 liters (800ml) of quality two-stroke transmission oil (see note below)
  • Pliers (to snug filler cap, as recommended by KTM)
  • Gloves (optional, for cleanliness and safety)

Note: Always refer to your owner's manual for the recommended oil type. For most KTM two-strokes of this era, a high-grade, motorcycle-specific transmission oil—such as Motorex 15W50 or Shell Advance Racing X—is preferred. Do not use engine oil. The premixed gasoline two-stroke system lubricates the top end; this oil change is for the transmission.

Step-by-Step Oil Change Instructions

  1. Warm Up Your Bike
    Start the engine and let it idle for a few minutes. Warming the engine thins the oil, allowing for a more thorough drain. Turn off and secure the bike on a level surface.
  2. Remove the Filler Cap
    Locate the oil filler cap on the right side of the engine. Turn it counter-clockwise and set it aside. This venting helps the old oil drain out completely.
    Tip: Wipe the area around the cap beforehand to prevent contamination.
  3. Position the Drain Pan
    Place your oil drain pan directly underneath the engine drain plug.
  4. Remove the Drain Plug
    Using your T-handle or socket, carefully loosen and remove the drain plug. Be cautious, as the oil may be hot.
    Specific to 1995 KTM 250EXC: The drain plug is magnetic—expect to see some metallic debris; this is normal, but excessive particles could indicate wear.
    Pro tip: Don't drop the plug into the pan.
  5. Let the Oil Drain Completely
    Allow all the old oil to drain into the pan. This may take several minutes.
  6. Inspect and Clean the Drain Plug
    Wipe debris from the magnetic tip of the drain plug with a clean rag.
    Replace the crush washer with a new one every oil change to avoid leaks.
  7. Reinstall the Drain Plug
    Thread the plug and washer by hand, then finish tightening with a T-handle. Use your torque wrench to tighten to 20 Nm (14.8 ft-lbs), the standard setting for most KTM EXC drain plugs from this era.
  8. Add Fresh Oil
    Use a funnel to pour in 0.8 liters (800ml) of the recommended transmission oil into the filler hole.
    Exact capacity is important—do not overfill.
  9. Reinstall and Snug the Filler Cap
    Tighten the cap by hand; KTM recommends using pliers to snug it slightly, ensuring it won't vibrate loose. Avoid overtightening.
    Check that cap and drain plug are secure and not cross-threaded.
  10. Clean Up and Check for Leaks
    Wipe down any spills. Start the bike and let it idle, then inspect around the drain plug and filler cap for leaks.
  11. Dispose of Old Oil Properly
    Recycle used oil according to your local regulations.

KTM 250EXC 1995 Model-Specific Call-Outs

  • The 1995 KTM 250EXC uses a magnetic drain plug—minor metal shavings are normal, but excessive debris may signal transmission wear.
    Always inspect the plug carefully.
  • Oil Capacity: 0.8 liters (800ml) is correct for transmission oil—do NOT confuse this with two-stroke premix, which is handled separately at a 1:40 to 1:60 fuel-oil ratio for these models.
  • Replace the crush washer at every change. This is a common source of drips on older KTM models.
  • Use only the correct transmission oil: Do not use regular automotive oil or engine oil, as incorrect lubricants can damage clutch and gearbox components.
  • For off-road riding or in wet or muddy conditions, consider shortening your oil change intervals for optimal shifting and performance.

Final Check

  • Always double-check the oil level by viewing the sight glass or using the dipstick (if equipped), and top off as needed.
  • Test ride, then check again for leaks or abnormal noises, which could indicate an installation error.

Following this guide will keep your 1995 KTM 250EXC running strong, protect your investment, and help you get the most out of every ride. For all your OEM and performance parts needs, trust MotoSport.com—the experts in dirt bike care.

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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.