Mix it up! Understanding 2-stroke petrol mix
A stroke of genius in engineering
If you own a chainsaw, grass trimmer, or other small petrol-powered gardening tool, you’ve likely come across the concept of a two-stroke petrol mix. But what exactly is it, and why is it different from regular petrol?
Two-stroke engines
Unlike the four-stroke engines found in cars and lawnmowers, two-stroke engines complete their power cycle in just two piston strokes. This makes them lighter and more powerful for their size – perfect for handheld equipment. However, this design comes with a catch: two-stroke engines lack a dedicated oil system.
The mix explained
To compensate for the missing oil system, a two-stroke engine mixes oil directly with its petrol. This special mix lubricates the moving parts within the engine, preventing wear and tear. The ratio of petrol to oil is crucial and can vary depending on the engine and manufacturer’s recommendations. A common ratio is 50:1 (50 parts petrol to 1 part oil), but always consult your owner’s manual for the exact specification.
Mixing it up
Using the wrong petrol mix can be disastrous for your engine. Here’s how to mix it safely and effectively:
- Gather your tools: You’ll need a clean, empty container (like a fuel can), a measuring jug for the petrol, and the appropriate two-stroke oil.
- Measure the petrol: Carefully measure the required amount of petrol using the measuring jug.
- Add the oil: Pour in the correct amount of oil based on the recommended ratio.
- Shake it well: Once everything’s in, give the container a good shake to ensure the petrol and oil are thoroughly mixed.
Pre-mixed convenience
Many garden stores also offer pre-mixed two-stroke petrol, a convenient option if you’d rather skip the measuring and mixing yourself.
Fueling up: safety first
When filling your tool’s fuel tank, use a funnel to avoid spills. Always follow the manufacturer’s instructions for safe fueling and operation of your two-stroke equipment.
By understanding and using the correct two-stroke petrol mix, you can keep your garden tools running smoothly and efficiently for years to come.
