seconds until the refueling is complete. The right front tire changer (who is usually also the crew chief) signals the driver when the stop is complete. Before the car departs its pit stall, a crew member must squirt water to wash any excess spilled fuel from the fuel buckeye; this is usually done with a pressurized water hose by a crew member behind the pit wall. Under normal conditions, a routine stop for an IndyCar team lasts between six and ten seconds. IndyCar teams are permitted to set their own pit strategies. Super Formula In Super Formula, Japan's top-level single-seater series, a total of six mechanics are allowed to work on a car. Of these six, three have fixed roles: the lollipop-signalman, the refueler, and the fire-fighter. They are forbidden from undertaking any other function during the pit stop. The remaining three mechanics are responsible for all other operations, most notably jacking up the car and changing the tyres. The general strategy is to have the three free mechanics operate on the car in an assembly-line-like manner, moving around the car between different stations. Because of the limited personnel, teams often come up with creative solutions to decrease pit stop times. For example, some teams employ an automatic front jack, which is placed in front of the car as it stops. Mechanics might also jump over the nose-cone of the car to save time getting to the other side. With the automatic front jack, a Super Formula pit stop takes between ten and twelve seconds; even without the automatic jack, pit stops can be completed in as little as fourteen seconds. Endurance racing In the various forms of sports car endurance racing, pit stops are a more leisurely affair, but no less important than in other forms of racing. While stops take longer, much more routine maintenance is scheduled during such pit stops, needed to keep the car running for as long as twenty-four hours; this includes major aerodynamic changes to deal with the changing temperature in such a long race, and replacement of certain wear-limited parts, such as brake pads. Due to the fact that the race is scheduled to last a certain length of time rather than a specific distance, pit strategies are generally not designed to be synchronised with the race distance, but rather to happen on a schedule based on the car's requirements for routine service.