# What 2 stroke fuel ratios should you use?

## What 2 stroke fuel ratios should you use?

Use a 32:1 gasoline to oil ratio. One gallon of gasoline combined with 4 oz of two-cycle engine oil. If you are in the state of California, use a 2-cycle oil mix ratio of 40:1.

What is the ideal air and fuel mixture ratio?

The stoichiometric mixture for a gasoline engine is the ideal ratio of air to fuel that burns all fuel with no excess air. For gasoline fuel, the stoichiometric air–fuel mixture is about 14.7:1 i.e. for every one gram of fuel, 14.7 grams of air are required.

Where should my air-fuel ratio be?

We mentioned the stoichiometric air-fuel ratio (14.7:1) that is the ideal ratio for lowest emissions, but this isn’t the best ratio for power. It used to be that 12.5:1 was considered the best power ratio, but with improved combustion chambers and hotter ignition systems, the ideal now is around 12.8:1 to 13.2:1.

### How much 2-stroke does it take to make 5 Litres of petrol?

The first thing you need to do is check the manual that came with your machine. It should tell you the correct ratio required for your 2-stroke mix. If you can’t find the specific ratio for your mix, 40:1 is accepted as an average ratio for two-stroke engines. This is 125mls of two stroke oil to 5L of fuel.

What happens if 2 stroke mix is wrong?

But running a two-cycle engine with too little oil can actually destroy the unit. 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.

What is a good air-fuel ratio at idle?

14.7:1 ratio
The 14.7:1 ratio is perfect for idling and light throttle cruising conditions as it’s the most efficient mixture possible, meaning the best fuel economy and lowest emissions.

#### How lean is too lean air/fuel ratio?

As you probably know, the ideal air-fuel ratio is 14.7 parts air to one part fuel. But that’s in an ideal world, one where every molecule of fuel and oxygen is completely consumed during every single combustion event. In a real engine, a 14.7:1 air-fuel ratio is a little too lean.

What is STIHL mix ratio?

Most STIHL gasoline-powered equipment runs on a 50:1 mixture of gasoline and 2-cycle engine oil.

Which 2 stroke oil do you use and what ratio?

The precise 2 stroke oil ratio depends on your manufacturers instructions, as each engine can have varied requirements. If you are unsure 40:1 is a middle range 2 stroke fuel ratio. This equals 25mls of two stroke oil to 1 litre of petrol. The two stroke mix ratio depends on the year your equipment was made, and/or the make of your equipment.

## How to mix 2 stroke oil and fuel?

Two-stroke engine lubrication.

• Starting with a safe fuel storage container.
• Choosing the right unleaded fuel.
• Choosing the right two-stroke oil.
• High Performance,HP oil: (544 0158-09,1 litre dosage bottle) Husqvarna’s HP two-stroke oil is formulated to work well with low-quality fuels.
• What oil do you use in your 2 stroke?

Motul 800. Without a doubt one of the most popular oils to see at the track is Motul 800.

• Castrol Power 1 Racing 2T. When I started racing,Castrol TTS was the top choice for all of the best riders.
• Maxima Castor 927. Another super popular oil in the racing world,aimed specifically at dirt bike riders,and it smell is unmistakable.
• Silkolene Comp 2
• How to mix 2 stroke fuel?

How to mix 2 stroke fuel (2 cycle gas) Lookup how much fuel you want to mix at the right ratio on your premix calculator or app (eg. 10 litres at 50 to 1). Add the prescribed amount of oil to the fuel container (eg. 200 mil). Add the prescribed amount of fuel (eg. 10 litres). Use the permanent marker to label the container.