Qusto l'ho trovato su un'altro forum:
Ecco cosa mi hanno risposto dalla fastace America:
Hi there,
Thank you for your inquiry.
For the FAST ACE USD fork, the standard oil quantity should be,
150ml weight 15 or 20 oil for right tube (with RED rebound adjustment knob) and
125ml weight 10 oil for left tube (with BLUE compression adjustment knob).
There’s no need to adjust the oil quantity or spring rate, instead, adjust the air pressure to suit rider’s weight, habits, and terrain.
For example, a rider weigh 95kg (210lbs), the air pressure should be: left tube, 150psi; right tube, 70-80psi.
A rider weighs 65kg (145lbs), left tube should be: 100psi; right tube: 40-45psi.
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