How to Change the Oil in a 2013 GAS GAS EC300E – MotoSport.com Guide

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Changing the oil on your 2013 GAS GAS EC300E is a crucial maintenance task that ensures lasting performance and a healthy transmission. While the process is straightforward, certain GAS GAS design quirks and model-specific considerations require a bit of know-how for a frustration-free oil change. This guide will walk you through the job, outlining all needed tools, step-by-step procedures, and insider tips specific to the EC300E.

Tools & Supplies Needed

  • 6mm Allen wrench or Allen socket (for drain and fill plugs)
  • Drain pan (to catch old oil)
  • Funnel (narrow, possibly flexible or angled – see model note below)
  • Rags or shop towels
  • Replacement oil (900cc of quality two-stroke transmission oil; check user manual for specific recommendations)
  • New crush washer (recommended to replace at each change to prevent leaks)
  • Torque wrench (optional, but ideal for precise re-tightening)
  • Skid plate tools (if your bike has an aftermarket or OEM skid/glide plate that blocks the drain plug, typically Allen keys or wrenches)

2013 GAS GAS EC300E Model-Specific Call-Outs

  • Oil Capacity: Holds 900cc of oil. Do not overfill – measure your new oil carefully.
  • Fill Plug Location: The oil fill plug is small and angled, making filling awkward. A flexible or angled funnel helps, but many owners find it easier to gently tilt the bike for access.
  • Drain Plug Access: The drain plug is located on the bottom of the engine; with a skid plate installed, there may be a hole for drainage, but often you’ll need to remove the plate entirely for free access.

Step-by-Step Oil Change Procedure

  1. Warm up the Engine
    • Start the bike and let it idle for 3–5 minutes to warm the oil. This helps suspend contaminants and allows oil to drain thoroughly.
  2. Prepare the Workspace
    • Place the bike on a stable stand.
    • Position your drain pan beneath the engine, directly below the drain plug opening.
    • Lay rags around to catch any drips or spills.
  3. Remove the Skid Plate (if necessary)
    • If your EC300E has a skid plate that blocks easy access to the drain plug, remove it with the appropriate tools. Most aftermarket ones require a few bolts to be undone with an Allen key or socket.
  4. Drain the Old Oil
    • Use your 6mm Allen wrench or socket to loosen and remove the drain plug underneath the engine.
    • Allow the oil to fully drain out. To ensure complete drainage, some owners carefully lean the bike (toward the drain plug side) against a wall after the initial flow subsides, but do so cautiously to avoid drops or spills. Only tilt the bike if you are confident it’s secure.
    • Inspect the old drain plug’s crush washer; replace it if flattened or degraded.
  5. Reinstall the Drain Plug
    • Once the oil ceases dripping, replace the crush washer (if needed) and reinstall the drain plug by hand first; finish tightening with your Allen wrench.
    • If you have a torque wrench, tighten to the specification in your owner's manual (do not over-tighten – the case threads are soft.).
  6. Fill with Fresh Oil
    • Remove the oil fill plug using the same wrench (top or side of the case, angled).
    • Because the fill hole is small and at an awkward angle, use a flexible or angled funnel. If you cannot easily pour, lay the bike over on its side (on a clean towel) to get the hole positioned upright. Many riders find this step easier with two people.
    • Carefully pour in 900cc of the recommended oil. Avoid overfilling; use a measuring container for accuracy.
  7. Replace Fill Plug
    • Once filled, wipe away any spilled oil around the fill opening. Install the fill plug and gently tighten.
  8. Finishing Touches
    • Reinstall the skid plate if you removed it.
    • Start the bike, let it idle a minute, then check for any leaks at the drain and fill plugs. Wipe up any residual oil.
    • If you have an oil sight glass or level bolt, double-check the oil level and adjust if necessary.

Pro Tips for Your GAS GAS EC300E Oil Change

  • Always run the bike for a minute and double-check for leaks before heading out on your next ride.
  • Changing oil after every 5–10 hours of riding (or as recommended by your manual) is a great habit for transmission longevity, especially under hard use.
  • Keep spare crush washers and a small bottle of the correct oil on hand for trail-side top-ups.
  • Use a catch pan low enough to fit under the bike with clearance; the EC300E has modest ground clearance.

Routine oil changes are straightforward but vital. Following the above steps and using the correct quantity of quality oil keeps your 2013 GAS GAS EC300E running smooth, gear changes crisp, and clutch action precise – so you can focus on the ride, not the repair.

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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.