Ducati Monster 1200 Owner's Manual page 273

Important
Do not use any additives in fuel or lubricants. Using them could result in severe damage of the engine
and motorcycle components.
Attention
The vehicle is compatible only with fuel having a maximum ethanol content of 10% (E10).
Using fuel with ethanol content over 10% is prohibited. Using it could result in severe damage of the engine
and motorcycle components. Using fuel with ethanol content over 10% will render the Warranty null and
void.
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