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Fuel and Oil Mixing Charts

The following Fuel and oil fuel mix ratio charts are a handy reference for those using any type of engine that requires mixed fuel. Use the print button on your browser to print out a copy to keep in your garage, your boat, or anyplace where you might end up making up an oil/fuel mixture. This is a .pdf document with % mixtures.

  16:1 24:1 32:1 40:1 50:1     16:1 24:1 32:1 40:1 50:1
Litres Millilitres of Oil Imp Gal Imp Ounces of Oil
5 300 200 150 125 100 1 8.0 5.5 4.0 3.5 2.5
10 625 425 300 250 200 2 16.5 11.0 8.5 7.0 5.5
15 950 625 475 375 300 3 25.0 16.5 12.5 10.0 8.0
20 1250 825 625 500 400 4 33.5 22.0 16.5 13.5 10.5
25 1550 1050 775 625 500 5 41.5 27.5 21.0 16.5 13.5

  16:1 24:1 32:1 40:1 50:1     16:1 24:1 32:1 40:1 50:1
Litres US Ounces of Oil US Gal US Ounces of Oil
5 10.5 7.0 5.5 4.0 3.5 1 8.0 5.5 4.0 3.0 2.5
10 21.0 14.0 10.5 8.5 7.0 2 16.0 10.5 8.0 6.5 5.0
15 32.0 21.0 16.0 12.5 10.0 3 24.0 16.0 12.0 9.5 7.5
20 42.5 28.0 21.0 17.0 13.5 4 32.0 21.5 16.0 13.0 10.0
25 53.0 35.0 26.5 21.0 17.0 5 40.0 26.5 20.0 16.0 13.0

  16:1 24:1 32:1 40:1 50:1     16:1 24:1 32:1 40:1 50:1
Imp Gal  Millilitres of Oil US Gal Millilitres of Oil
1 275 200 150 125 100 1 225 150 125 100 75
2 575 375 275 225 175 2 475 325 225 200 150
3 850 575 425 350 275 3 700 475 350 275 225
4 1125 750 575 450 375 4 950 625 475 375 300
5 1425 950 700 575 450 5 1175 800 600 475 375

NB: We along with our engine manufacturer ONLY recommends the use of the superior "CASTROL POWER 1 TTS RACING" (*) usually mixed @ 50:1 or less, a 45:1 mixture will give you a little more protection for harder working engines.

One of the main reasons we prefer to use this oil, it stays “emulsified” (in suspension) for longer than all other oils we know, so if you are not flying for several weeks the oil in the fuel will not be degraded or separated.

Castrol Power 1 TTS Racing is an outstanding full synthetic, low smoke, high performance two-stroke engine oil.

It is specifically designed for the latest generation of high output air and water-cooled Japanese and European two-stroke engines.

It provides excellent lubrication for most competition, street and off-road Motorcycle engines and is our prime recommendation whenever a higher level of engine protection is required.

It may also be used in Go-Kart racing engines, or wherever Castrol Activ 2T is recommended. It is not recommended for marine engines. The product exceeds JASO FD and ISO EGD.

(*) May also use CASTROL ACTIV 2T @ 50:1, is also a Mineral-based engine oil suitable for use in all two-stroke motorcycle engines, running on either leaded or unleaded fuel. Provides advanced protection without compromising power. Exceeds JASO FC.

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