if u mean how much engine oil, which i think you do cos the FZ6 has a wet clutch system then its 2.2liters if your only changing the oil and 2.6 liters if your changing oil and filter....thats 2.3 US qts, 3.8 imperial pts and 2.7 US qts, 4.6 Imperial pts.....im typing this from the manual
Over here in England i/we use 10w40 im told for warmer climates use 20w40 synthetic oil, there is a debate about using car oil some say it damages your clutch plates other say this is a myth cos car oil is much cheaper but ill let you decide....hope this helps