How to Change the Oil in a 2023 GAS GAS TXT GP 300: A Complete, Model-Specific Guide for MotoSport.com

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Changing the oil in your 2023 GAS GAS TXT GP 300 is one of the most crucial yet straightforward maintenance tasks that ensure the durability and peak performance of your trials bike. Below, you’ll find a proprietary, step-by-step guide tailored to this specific model, including all tools needed, careful call-outs for 2023, and MotoSport.com’s best practices for a professional-quality oil change at home.

Tools and Supplies You Will Need

  • Socket wrench set (make sure to have metric sockets; the drain bolt commonly needs an 8mm or 13mm socket, check your owner's manual or bolt head)
  • Oil drain pan
  • Funnel (small, for narrow fill opening)
  • Torque wrench (for reinstalling the drain bolt and clutch cover bolts to spec)
  • Replacement crush washer for the drain bolt (recommended at every change)
  • Clean rags or paper towels
  • Recommended gear oil (for the TXT GP 300, a high-quality 75W gear oil is ideal; consult your owner’s manual for specific brand/specification recommendations)
  • Rubber gloves (optional, for cleanliness)

Preparation

  • Warm the engine gently for 2–3 minutes. This helps oil flow freely for a fuller drain. Do not make the engine hot—just warm to the touch.
  • Balance your GAS GAS TXT GP 300 on a stand or flat surface so it is level. This ensures complete oil drainage and correct refill levels.
  • Gather all tools and supplies before starting. Double-check you have a new crush washer on hand.

Step-by-Step Oil Change Process

  1. Locate the Drain Bolt
    • The drain bolt for the transmission oil is located on the bottom right side of the engine case—look for the lowest bolt on the side cover. Consult your owner’s manual for the exact location if needed.
  2. Remove the Drain Bolt
    • Position your oil pan directly beneath the drain bolt.
    • Using the correct socket, remove the drain bolt slowly. Be careful: the oil could be hot if the engine is over-warmed.
    • Allow the oil to completely drain. Watch for metallic particles in the oil or on the drain plug’s magnetic tip—minor “fuzz” is normal; large pieces indicate internal wear and should be inspected by a professional.
  3. Clean and Inspect
    • Wipe the drain bolt clean, especially the magnetic tip.
    • Install a new crush washer onto the bolt for proper sealing.
    • Clean the engine area around the drain hole with a rag to ensure a debris-free installation.
  4. Refit the Drain Bolt
    • Thread the drain bolt in by hand first to avoid cross-threading.
    • Using your torque wrench, tighten the drain bolt to the torque specified in your owner’s manual—avoid overtightening, as this can strip the threads on the engine case.
  5. Refill with New Oil
    • Remove the oil fill plug, located on the top of the engine case.
    • Using a funnel, pour in the recommended quantity of transmission oil (usually about 400cc for the TXT GP 300, but always verify with the latest owner’s manual).
    • Pro Tip: Pour slowly to prevent overfilling or spilling; the fill opening is small and easily splashed.
  6. Replace Fill Plug and Check for Leaks
    • Refit the fill plug and tighten to specification.
    • Wipe down the area; start the bike and let it idle for 30 seconds, then turn it off and inspect for leaks around the drain bolt and fill plug.
    • Re-check oil level and top off if needed—never overfill.

2023 GAS GAS TXT GP 300 Model-Specific Call-Outs

  • The 2023 TXT GP 300 shares its transmission oil capacity and service procedure with earlier model years, but it is always recommended to consult the latest owner's manual for torque values, fill capacities, and oil type.
  • Crush washer must be replaced every oil change to prevent leaks—skipping this can damage the casing or cause persistent drips.
  • Always inspect the magnetic drain plug for metal shavings: a small amount is normal, but large shards warrant expert attention to prevent catastrophic failure.
  • Engine covers on the TXT GP are lightweight aluminum; overtightening bolts can lead to expensive damage—use a torque wrench where specified.
  • The clutch feel on trials bikes is sensitive to oil quality; using worn or incorrect oil can cause clutch drag or slipping.

Disposal and Final Tips

  • Dispose of your used oil responsibly: take it to an official recycling center or auto parts store that accepts oil waste.
  • Record your oil change in your maintenance log for warranty and resale value.

Expert Insight

Regular oil changes—ideally every 15–20 ride hours—help maintain the crisp clutch action and smooth shifting essential for trials performance. For GAS GAS TXT models, keeping your transmission oil fresh is one of the single best investments you can make toward long-term reliability and optimum power transfer.

For OEM parts, expert advice, and premium tools, visit MotoSport.com.

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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.