Banshee Mix Ratio: The Secret to Ideal Fuel-Oil Mixture!

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The oil-gas mix ratio is crucial for your Yamaha Banshee to function correctly. But finding the exact mix ratio can be challenging.

So, what’s the proper Banshee mix ratio?

Following the ratio recommended by the oil manufacturer would be the best for your Yamaha Banshee. That’s because the proper mix ratio would depend on your engine oil. For example, Yamaha recommends using Yamalube R oil in a 24:1 ratio. If that’s hard to get, using Castrol oil in a 20:1 ratio would be ideal.

In the following sections, you will learn about different engine oils and how to incorporate that with gasoline. 

What’s the Ideal Yamaha Banshee Mix Ratio?

best Banshee mix ratio
Source: Web Bike World

The manufacturer-recommended best Banshee mix ratio is 24:1. But that’s applicable if you use the Yamalube R 2-cycle oil. As a substitute for the Yamalube, the manufacturer recommends Castrol R30, A545, or A747 oils in a 20:1 mixture.

So, the ideal oil-fuel mixture will depend on which oil brand you are using. Based on the oil brand, your oil-fuel mixture ratio will change. This mixture ratio may also change based on your octane number.

Let’s examine some popular oil brands and what mixture you should use.

Oil BrandsRatio
Motul 800 2T50:1-67:1
Motul 710 2T25:1-50:1
Motorex Cross Power 2T 32:1 
Yamalube 2R32:1 
Amsoil Saber100:1
Amsoil Dominator50:1
Ipone Samourai Racing 2T50:1
Castor 92732:1

You have to follow the instruction for mixing the ratio that comes with the oil.

What’s the Recommended 2-Stroke Oil for Banshee?

The best 2-stroke oil for Yamaha Banshee is Yamaha’s Yamalube 2R. The manufacturer recommends this engine oil. You can use it on a 24:1 ratio, as instructed in Banshee’s manual. This is also the stock banshee mix ratio.

Also, some users recommend a 32 to 1 fuel mix ratio. Always ensure that no air gets into the mixing.

2-Stroke Oil for Banshee
Source: Bikewale

Apart from Yamalube 2R, Banshee users also prefer some other engine oils, like-

Oil NameFeaturesPrice
Amsoil DominatorEnhances film strength for high-heat, high-rpm engines,
Maximizes power output with anti-friction formula,
Reduces ring sticking and plug fouling with clean-burning technology,
Shields both coated and non-coated racing pistons for ultimate protection
Check price
Klotz R50 Racing Recommended for power valve engines,
Features identifiable Klotz red color and racy scent,
Improves throttle response for enhanced performance,
Extreme film strength protects against metal-to-metal contact,
Clean-burning formula reduces smoke and prevents plug fouling,
and High-temperature stability reduces power valve deposits
For pre-mix use only; not intended for oil injection systems
Check price  
Maxima Castor 927Provides maximum performance and protection under severe conditions,
Resists carbonization and vaporization with a surface-active ester and castor oil blend,
Maintains a clean engine with an ash-free additive system that prevents gum formation, corrosion, and deposits.
Check price

These oils can do an excellent job for your Banshee. However, if you have a choice of products, you can also use them. You should choose an oil that is suitable for your Banshee.

How to Properly Mix Oil Fuel for Your Banshee?

To properly mix the oil and gas for your Yamaha Banshee, you will need a separate, leak-proof container slightly larger than the fuel and oil required. Make sure the container is clean and free of any dirt or debris.

Step 1: Take Appropriate Amount of Oil and Fuel

First, measure the appropriate amount of oil based on the manufacturer’s recommendations and pour it into the empty container. Then, add the correct amount of gasoline to the container.

Now, you should know the proper ratio for your engine oil. But even then, it is challenging to achieve the proper ratio unless you know how much oil goes with how much gas. You check out a chart that explains the proper oil-fuel mixture.

Also, you can use tools like Ratio Rite which is a measurement cone that explains all the right combinations to get the proper mixture.

Step 2: Combine the Liquids Evenly

Seal the container tightly and gently swirl until the liquids are evenly combined. It is essential not to shake the container, as this can cause foaming and uneven mixing.

Step 3: Pour the Mixture into the Fuel Tank

After thoroughly blending the mixture, carefully remove the cap and fill the gas tank on your Yamaha Banshee. If the mixed gas has sat unused for a while, it is important to swirl the mixture in the container again before fueling.

Remember never to mix the oil and gas directly in the fuel tank, which can result in an uneven mixture and potentially cause engine damage. Following these steps will ensure that the gas mixture for your Yamaha Banshee is properly blended and will provide the best performance and longevity for your engine.

What Happens If You Use the Wrong Mix Ratio?

In 2-stroke engines, improper oil-gas mix ratio can lead to several issues that can negatively impact performance and longevity. Some potential issues are:

Engine Damage:

Engine components are lubricated by oil in the mixture, which helps prevent excessive friction and wear. If the oil-gas mix ratio is incorrect, the engine may not receive enough oil to lubricate its parts correctly. Over time, this can lead to increased friction, which generates heat and causes the metal components to wear down faster, resulting in engine failure and damage.

You may experience problems like stalling while trying to accelerate.

Wrong Mix Ratio
Source: Millennium Tech

Poor Performance:

Using the wrong oil-gas mix ratio results in poor engine performance. If the engine does not receive enough lubrication, it will not run smoothly, and its power output will decrease. This can cause issues like engine stalling, reduced acceleration, and decreased top speed.

Using too much oil in the gas mixture can result in incomplete combustion, fouled spark plugs, decreased power output, and increased fuel consumption. Excessive oil can also cause oil pooling in the crankcase, leading to engine damage and failure if not addressed promptly.

Excessive smoke and emissions: 

Excessive smoke and emissions can be a common problem when using too much oil in the gas mixture of a two-stroke engine. The excess oil does not burn completely during combustion and results in a visible smoke trail from the exhaust. This smoke can be a nuisance to the operator and those around them and harm the environment.

The engine may also run less efficiently with excessive smoke and emissions. If the fuel mixture is not balanced correctly, the engine may not be able to produce the power it is capable of, leading to reduced performance and higher fuel consumption. Incomplete combustion can also build up engine deposits, increasing wear and reducing engine life.

Frequently Asked Questions (FAQs):

What happens when you use 40 1 instead of 50 1?

If you use 40:1 instead of 50:1, your engine will have better lubrication, which is good for your vehicle. However, your spark plug will get dirty faster than usual.

How many mL of oil for 40 to 1?

To have a ratio of 40 to 1, you will need to mix 128 oz of gasoline with 3.2 oz of 2-cycle oil. For precision, you can use measuring tools like “Ratio Rite.”

Is it bad to mix two fuels?

Yes, mixing two fuels can be harmful or dangerous, depending on the types of fuels involved and how they are mixed. Mixing two gasses with different chemical compositions or properties can result in unpredictable and potentially hazardous reactions.


Without the proper Banshee mix ratio, it won’t be long before your engine faces a fatal issue. So, always try to get the mixture right.

Also, it’s better to use more oil than less oil when making a mixture. That’s because using less oil in the mix makes it vulnerable to damage than using more oil.