Lucas Oil power steering stop leak is an additive for mechanical rack and pinion power steering systems. It is guaranteed to stop seal leaks and is also effective in reducing slack and hard spots in worn steering. It can also stop squeals and squeaks from the power steering system.Guaranteed to stop seal leaks in power steeringReduces slack, tight sports and squeals in worn power steering systemsMuch cheaper alternative to replacing or reconditioning work partsImmediate and long lasting resultsPower steering stop leak is not recommended for use in electronic power steering systems.1 Litre or 355ml bottle. One 355ml bottle is enough to treat most power steering systems.Power Steering Stop Leak Technical Data Sheet