Does My Equipment Require a Petrol and Oil Mix?

Yes - Two-cycle engines in smaller outdoor power equipment like chainsaws, leaf blowers and trimmers need oil and petrol mix. The petrol fuels the engine, while the oil keeps the engine running by lubricating the cylinder walls and reducing friction.

How Much Oil and Petrol Do I Need?

Always use un-leaded and two-cycle oil for your equipment engines. Many two-cycle models require a 50:1 gas-to-oil ratio, but some other models may require a 40:1 or 30:1 ratio etc. The equipment’s recommended ratio is usually listed on the engine housing. If you don’t see it there, check the owner’s manual.

How Do I Mix Oil and Petrol?

Never mix the oil and petrol directly in the fuel tank. Always mix in a separate, leak-proof container that’s slightly larger than the volume of petrol and oil required, and make sure the container is free of dirt or any other materials.

  1. First pour the premeasured oil into the empty container, then pour in the appropriate amount of petrol.
  2. Seal the container and then swirl the mixture until the liquids are evenly combined. Do not shake. Well-blended petrol will have even shading throughout and no light or dark streaks.
  3. Once fully mixed, carefully remove the cap and fill the fuel tank. If the mixed fuel has sat unused for a while, be sure to swirl the mixture in the container before fueling.

What Happens if I Use Too Much Oil?

Using the proper oil-to-petrol ratio is important, but if you’re off, it’s better to mix too much oil into your engine than mixing too little oil. Excess oil can produce a smoky exhaust, oil leaking out of the exhaust, and sometimes loss of power. While not ideal, these issues can be fixed by simply replacing the fuel in the tank with properly mixed fuel. 

What Happens if I forget to add 2 Stroke Oil to the Petrol?

Running a two-cycle engine with too little oil or no oil can actually destroy the engine. Oil helps cool the piston and cylinder by keeping them evenly lubricated. Without lubrication, the metals can melt and potentially grate against each other, transferring metal to and from one another and permanently distorting them. Loss of engine power, no tick over and poor starting is a strong indicator that this has occurred. This is accidental damage and will not be covered by your products warranty.

Can Oil and Petrol Mixtures Go Bad?

Yes. Don’t store any fuel – mixed or unmixed – for longer than 30 days. Old petrol can hurt an engine’s power output, cause buildup and blockage in engine parts, and make starting more difficult. Storing petrol with a fuel stabilizer can help extend the life of the petrol. 

What’s the Best Fuel for My Engine?

Fuel specifications vary by manufacturer, so always refer to your owner’s manual for fuel recommendations specific to your equipment.

Increased Ethanol in Unleaded Fuel

By September this year 2021, the UK will be increasing the ethanol content in unleaded petrol from 5% to 10% as part of a move toward cutting greenhouse gas emissions in the country.

For your car, this could mean decreased miles to the gallon due to ethanol's lower energy content, but what could it mean for petrol-powered garden tools?

It could lead to an increase in customers with carburettor issues as storing petrol with higher ethanol content over extended periods can cause increased corrosion because ethanol tends to absorb moisture.

Regardless of this ethanol increase, we always recommend that our customers drain the fuel from their garden equipment if it will not be used for two weeks or longer, as this could lead to stale fuel issues.

 It is good to note that the more expensive, premium quality super unleaded fuel will continue to contain 5% or less ethanol moving forwards, so customers will still have the choice of using petrol with a lower ethanol content.