In most stations in Canada and the US, the pump has a single nozzle and the customer selects the desired octane grade by pushing a button. Some pumps require the customer to pick up the nozzle first, then lift a lever underneath it; others are designed so that lifting the nozzle automatically releases a switch. Some newer stations have separate nozzles for different types of fuel. Where diesel fuel is provided, it is usually dispensed from a separate nozzle even if the various grades of gasoline share the same nozzle.