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Two Stroke Oil Pre-Mix Calculator

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Consumers have the freedom to choose other than OEM branded lubricants without fear of voiding the original limited or implied warranty. AMSOIL synthetic lubricants and performance products are tough, reliable, long lasting, and save you time and money with the peace of mind that your vehicles/ equipment will last longer. About Warranty Secure

Premixing fuel?… This Two Stroke Oil Mix Calculator, provided by Synthetic Lubricants, offers two calculations:

  • Fuel to Oil: Calculates how much oil is needed for a given amount of fuel.
  • Oil to Fuel: Calculates how much fuel is needed for a given amount of oil.

 

Getting the right two-stroke engine fuel-to-oil ratio is essential for ensuring your two-stroke engine runs smoothly and efficiently. Ratios like 50:1, 40:1, or 16:1 may seem complex at first, but they simply represent the proportion of fuel to oil in the mix.

For example, an outboard motor requires a 50:1 ratio, which means 50 parts fuel to 1 part oil. Understanding these ratios helps you accurately determine how much oil or fuel to add to meet the exact specifications for optimal performance.

two stroke oil mix calculator

Calculate: Metric, Imperial or US Gallons

Simplifying 2 Stroke Oil Measurements

Fuel to Oil, or...
Oil to Fuel


Result

The most common approach to mixing fuel with oil is starting with a known amount of fuel—like 5 gallons—and adding the correct amount of oil to achieve a specific mix ratio.

Add Oil to Fuel
But it’s just as important to ask: “Since I only have 3 ounces of oil, how much mixed fuel can I make at a 40:1 ratio?”

This calculator helps you solve both questions—whether you're starting with fuel or oil.

100:1 synthetic oil ratios are highly achievable with modern high-performance oils like 2-Stroke SABER®. Interestingly, early AMSOIL Dealers often recounted stories of Albert J. Amatuzio testing the oil at an extraordinary 300:1 ratio during API certification.

Step by step | Fuel to Oil Mix Ratio Calculator

Calculate how much fuel to add to the oil or how much oil to add to the fuel, including specialized ratios like 300:1 for high-performance synthetic oils.

Select Calculation Mode

Choose between:

  • Fuel to Oil: Calculates how much oil is needed for a given amount of fuel.
  • Oil to Fuel: Calculates how much fuel is needed for a given amount of oil.

 

Choose Unit System

Select one of the following:

  • Metric: Litres or millilitres.
  • Imperial (British): Gallons (Imperial), quarts, or ounces.
  • US Gallon: Gallons (US), quarts, or ounces.

Enter the Amount

  • For Fuel to Oil: Enter the amount of fuel and select its unit (e.g., gallons or litres).
  • For Oil to Fuel: Enter the amount of oil and select its unit (e.g., ounces or millilitres).

Set the Mix Ratio

  • Enter the desired fuel-to-oil ratio (e.g., 50 = 50:1).

Calculate

  • Click the Calculate button.
  • The result will display the required quantity in the appropriate unit.

Reset

  • Click the Reset button to clear all inputs and start a new calculation.

Result Field

  • The calculated result will specify the unit system and show the exact amount.

Notes

  • Ensure you use positive values for accurate results.
  • The units in the result will match the selected unit system (Metric, Imperial, or US Gallon).

Understanding Engine Oil Ratios and Measurements

Getting the right oil-to-fuel ratio is crucial for keeping your two-stroke engine running smoothly and efficiently. Ratios like 50:1, 40:1, or even 16:1 might seem confusing, but they simply represent the amount of fuel to oil in the mix. For example, a 50:1 ratio means 50 parts fuel to 1 part oil.

With SyntheticLubricants.ca calculator, you can quickly determine how much oil or fuel to add to meet these exact specifications.

Have you ever wondered:

  • How much 2-cycle oil is needed for 1 gallon of gas?
  • What’s the difference between 50:1 and 40:1 ratios?
  • How do I calculate the ml of oil mix ratio in millilitres or ounces?
  • Can synthetic oil be mixed at 100:1?

This 2-stroke oil mix calculator, along with its helpful guides, has you covered. Whether you’re using imperial gallons, US gallons, or metric litres, you’ll find clear answers and step-by-step instructions to ensure your fuel mixture is a precise gas-to-oil ratio every time.

Mixing Oil with the Right Amount of Gas

Different 2 cycle engines need precise oil and gas mixtures to deliver optimal engine’s performance and longevity. Whether you’re preparing fuel for a chainsaw, lawn mower, golf cart, weed wacker, or outboard motor, using the correct ratio is vital to avoid engine damage and ensure smooth operation. For instance:

  • A chainsaw typically requires a ratio like 50:1 or 40:1 for clean cuts and long-lasting performance.
  • For a leaf blower, the oil and gas mixture might be tailored to manufacturer recommendations, such as 25:1 or 50:1.
  • 2 stroke outboard motors, including Yamaha models, often rely on a specific mix, with synthetic oils 100:1, to maintain efficiency on the water.

Synthetic Lubricants’ premix calculator simplifies this process, helping you calculate the correct amount of gasoline needed for any two stroke oil ratio type. No more trial and error—just enter your gallons of fuel and desired ratio, and you’re ready to go. Keep your equipment running smoothly with the right 2 stroke oil mix ratio, whether you’re tackling heavy-duty tasks or recreational activities!

Synthetic Lubricants' Ratio Calculator

Achieving the correct fuel-to-oil premix is crucial for optimal performance in any 2-stroke engine, from small tools like chainsaws to high-powered outboards. Precise oil measurement—calculated in milliliters or ounces—ensures adequate lubrication, reduces wear, and minimizes smoke for efficient combustion.

SyntheticLubricants.ca Gas Oil Mix Calculator simplifies the process, allowing you to quickly determine the exact oil needed for any ratio. Whether you’re preparing a standard 50:1 mix or a rare 300:1 ratio for specialized applications like lightweight drones or ultra-high-performance engines, the calculator ensures accuracy and efficiency. With the right mix, you can focus on your task, knowing your engine is protected and running at its best.

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