When the bike was new I noted fuel bike on center stand. Two times I fueled on the side stand rocked the bike to get air out then on center stand, attempt to add fuel could not add any. Now I only fuel on the side stand. Fuel temperature has something to do with the amount you get into the tank and how many miles you can go. Fuel with engine hot you will get less fuel in the tank than if you fuel with the tank cold. Keep in mind we are talking a quart or less and how far can you go on a quart before you are pushing the bike on the shoulder of the road.