E10 - 5 Fuel & Storage – What You Need to Know (Motorcycles)

If your bike is sitting for a while, E10 doesn’t stay “fresh” for long.

How long is E10 safe in a modern bike?

➡️ Around 4–8 weeks before it starts to degrade.

After that, starting issues and rough running become more likely.

Storage comparison:

• E10 (10% ethanol): ~1–2 months

• E5 (5% ethanol): ~2–3 months

• Ethanol-free / Super+: 4–6 months+

Why E10 goes bad quicker:

• Ethanol absorbs moisture

• Can cause corrosion in tanks and lines

• Fuel loses volatility → harder starting

If parking your bike for winter or longer:

✔ Fill the tank almost full

✔ Add a fuel stabilizer (Millers, Motul, STA-BIL etc.)

✔ Run the engine for 2–3 minutes to circulate treated fuel

Pro tip: If storing for months, switch to E5 or ethanol-free before parking it.

Ride it often, keep it fresh 👊🏍️