212 man
Both machines use the Allison C20 series, they do use the same amount of fuel, just the same as the 206 at max continuous uses the same amount of fuel as a 500 at max continuous, which is around 200 lbs of fuel / hr ( approx 25 gals). If you look at the Allison specs you will find the fuel flow charts at the various power settings. I agree that if each helicopter type does not use the same amount of power from the engine then obviously the fuel flow will be different eg Schweizer 333, but 206 500 and 480 use the same amount of power. The C20R series engine uses about 5 gals more than a C20B it is used in 500's as the hot and high varient as it pulls less tot for a given Tq setting.