How to Change the Oil in a 2023 GAS GAS EX 450F

Shop parts for a 2023 GAS GAS EX 450F Dirt Bike.

Regularly changing the engine oil in your 2023 GAS GAS EX 450F is critical for maintaining peak performance and ensuring the longevity of your dirt bike. This step-by-step guide provides all the proprietary details required for MotoSport.com readers, including model-specific call-outs, tools required, and precise directions for the EX 450F.

Tools and Supplies Needed

  • 1.2 liters of Motorex Cross Power 4T 10W/50 full synthetic oil (as specified for the EX 450F)
  • OEM oil filter
  • Oil drain bolt crush washer (replace each oil change)
  • Drain pan
  • 10mm and 13mm socket or T-handle wrench
  • 5mm Allen wrench
  • Pliers
  • Snap ring pliers (optional;–for screen removal if needed)
  • Safety glasses
  • Rubber gloves
  • Cleaning rags
  • Contact cleaner (optional but recommended)
  • Skid plate removal tools (if your bike is equipped)
  • Measuring cup (optional, if you are not using a pre-measured oil change kit)

Preparation Steps

  • Start the bike and let it idle for 2–3 minutes to warm the oil. This helps the oil drain out thoroughly by reducing its viscosity.
  • Turn off the ignition and ensure the motorcycle is upright on a level surface. For models with an ignition lock or transponder key, confirm the ignition is fully off.
  • Remove the skid plate if fitted, using the appropriate tools.

Step-by-Step Oil Change Process

  1. Locate and Remove Drain Bolts
    • There are typically three drain plugs on the 2023 EX 450F: the main engine drain, and two oil screen covers (consult the owner’s manual for precise locations).
    • Clean the area around each bolt to prevent contamination.
    • Use the 10mm or 13mm wrench and the 5mm Allen wrench as needed to remove the plugs and covers.
    • Drain all oil into your pan and allow several minutes for complete drainage.
  2. Remove and Inspect the Oil Filter
    • Remove the oil filter cover with your wrench or Allen tool.
    • Remove the old filter, noting its orientation so you can install the new one correctly.
    • If oil screens are present, remove them with pliers or snap ring pliers and clean thoroughly with contact cleaner and a rag.
    • Inspect the magnetic drain plug for any metal debris; wipe clean.
  3. Replace Parts
    • Install a new OEM oil filter, ensuring proper fitment.
    • Replace the drain plug crush washer with a new one (always use a new washer to prevent leaks).
    • Reinstall cleaned oil screens, drain plug(s), and torque to manufacturer specifications as listed in your owner’s manual (typically 10–15 Nm, check manual for exact). If you see a thread locker on removed bolts, reapply as per instructions.
  4. Add New Oil
    • Unscrew the oil filler cap.
    • Pour in 1.2 liters of Motorex Cross Power 4T 10W/50 oil (or equivalent).
    • If using an oil change kit, the pre-measured bottle is exactly what you need.
  5. Check Oil Level and Final Inspection
    • Reinstall the oil filler cap.
    • Start the engine and let it run for up to one minute. Check for leaks around all service points.
    • Turn off the engine, wait a moment, then check the oil level in the inspection window or dipstick as specified for your GAS GAS EX 450F.
    • Top off oil as necessary. Do not overfill.
    • Reinstall the skid plate if removed.

Model-Specific Call-Outs for the 2023 GAS GAS EX 450F

  • The recommended capacity is 1.2 liters of 10W/50 full synthetic oil. Using the exact oil type and amount is crucial for engine longevity and performance. A GAS GAS branded oil change kit is available, which contains everything you need in one package, including the appropriate filter and washer for the EX 450F.
  • The EX 450F shares much of its oil system design with KTM and Husqvarna 450cc models. If unfamiliar, be aware you may have multiple drain bolts and at least one oil screen to clean as part of every change.
  • Always carefully inspect the magnetic drain plug for shavings or debris. Increasing debris between intervals could indicate excessive engine wear and should not be ignored.
  • Never reuse the crush washer unless necessary. A worn washer can cause oil leaks and potential engine damage.
  • Follow the specific torque specifications for all bolts. Over-tightening can strip case threads, under-tightening may cause leaks.

Common Pitfalls and Pro Tips

  • Allow the oil to drain fully—don’t rush this step.
  • Dispose of old oil responsibly at a recycling center or auto parts retailer.
  • After the first short ride, recheck for leaks and oil level, topping off if needed.
  • Always use an OEM quality filter (included in OEM kits) to maintain oil flow and filtration standards.

Conclusion

Changing the oil on your 2023 GAS GAS EX 450F is straightforward with the proper tools and attention to detail. Sticking to model-specific recommendations ensures top performance and durability. If you need OEM kits or additional supplies, MotoSport.com provides everything required for a successful oil change every time.

Related Shopping Categories

Shop Motor Oil for a 2023 GAS GAS EX 450F Dirt Bike.

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Shop Oil Drain Pans for a 2023 GAS GAS EX 450F Dirt Bike.

Shop Tools for a 2023 GAS GAS EX 450F Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2023 GAS GAS EX 450F 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.