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Written by Vic R   
Litres

Ratio

 161820334050
1635650302520
2125111100615040
3188167150917560
425022220012110080
5313278250152125100
10625556500303250200
20125011111000606500400

 

Premium unleaded (98 octane) is used in karts. 100 octane fuel should be avoided.

The following engines use castor based oils such as Shell M or Motor X Castor.

  • Yamaha S (Clubman) 18 to 1 (20-16 to 1 is normal range)
  • Yamaha J (National) 18 to 1 (20-16 to 1 is normal range)
  • Leopard and Fireball 16 to 1
  • Comer 20 to 1

  • Rotax - Do not use castor based oils. Instead us a synthetic such as Shell T2 or Motor X Synthetic.
    • 33 to 1 for high ambient temperatures
    • 40 to 1 (for most conditions)
    • 50 to 1 can be used for cold conditions
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