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I've got a 2000 GSXR600. It supposedly has a fuel capacity of 18.00 litres (4.76 gallons). I tend to fill up right after hitting 100 on my trip meter and my tank always seems empty but my gas light has never gone on and the most I ever seem to have to put in is 3ish gallons. The longest I've ever gone without filling up is about 120 miles but I want to make sure that I'm actually getting decent mileage (and especially that I have no engine probs causing poor mileage) About how many miles per tank should I be getting on my gixxer assuming relatively normal riding conditions (some twisties but no crazy redline bouncing or anything stupid).