Mix Two-Stroke Fuel the Right Way (40:1)

Quick Answer

To mix two-stroke fuel at a 40:1 ratio, use fresh unleaded petrol and high-quality two-stroke oil. Measure both accurately using a 40:1 mixing bottle, secure the lids, and shake thoroughly before filling your machine.

Tip: Always use fresh petrol that is less than 30 days old for the best engine performance and reliable starting.

Before You Start

Correctly mixed fuel is essential for the performance and lifespan of your two-stroke engine.

Using the wrong fuel mixture can cause:

• Poor engine performance
• Excessive exhaust smoke
• Spark plug fouling
• Difficult starting
• Engine overheating
• Permanent engine damage

Always:

• Use fresh unleaded petrol
• Use high-quality two-stroke engine oil
• Mix fuel in a clean, approved fuel container
• Follow the recommended 40:1 fuel-to-oil ratio

Important: Never use straight petrol in a two-stroke engine, as this can cause severe engine damage.

Watch the Assembly and Operation Video

What You'll Need

Before mixing the fuel, gather the following:

• 40:1 two-stroke mixing bottle
• High-quality two-stroke engine oil
• Fresh unleaded petrol (less than 30 days old)
• Funnel

How to Mix 40:1 Two-Stroke Fuel

Follow these steps to prepare the correct fuel mixture.

1. Check the correct fuel ratio

Confirm that your product requires a 40:1 fuel mixture by referring to the user manual.

Important: Always use the fuel ratio specified for your particular machine.

2. Fill the petrol reservoir

Pour fresh unleaded petrol into the petrol section of the mixing bottle until it reaches the 10 marker.

Avoid overfilling.

3. Fill the oil reservoir

Pour two-stroke oil into the oil section of the mixing bottle until it reaches the corresponding 10 marker.

Accurate measurements ensure the correct 40:1 mixture.

4. Secure the lids

Ensure both the petrol and oil compartment lids are tightly closed before mixing.

Check that the caps are fully sealed to prevent leaks.

5. Mix thoroughly

Shake the mixing bottle thoroughly until the petrol and oil are completely combined.

Your two-stroke fuel is now ready to use.

Use the mixture as soon as possible for the best performance.

Fuel Storage Tips

For best results:

• Use fuel within 30 days of mixing
• Store fuel in an approved fuel container
• Keep fuel in a cool, dry, well-ventilated area
• Keep fuel away from heat, sparks and naked flames
• Dispose of old fuel safely in accordance with local regulations

Important Information

• Always use fresh unleaded petrol.
• Only use quality two-stroke engine oil.
• Never use old or contaminated fuel.
• Never use straight petrol in a two-stroke engine.
• Always mix the fuel thoroughly before filling the fuel tank.

Frequently Asked Questions

What does a 40:1 fuel ratio mean?

A 40:1 ratio means 40 parts unleaded petrol to 1 part two-stroke engine oil.

Can I use old petrol?

No. Petrol older than 30 days can reduce engine performance and make starting more difficult.

What happens if I don't mix the fuel correctly?

Using too much or too little oil can cause excessive smoke, poor performance, overheating or serious engine damage.

Can I use any two-stroke oil?

For the best performance, use a high-quality two-stroke engine oil that meets the specifications recommended in your product manual.

Should I shake the fuel before using it?

Yes. Always shake the fuel mixture thoroughly to ensure the petrol and oil are fully combined before filling your machine.