This engine cleaning kit from Laser is a must have for any car owner or mechanic & is suitable for turbo charged & non turbo charged diesel & petrol engines. The eco-friendly solution is safe & easy to use & helps to solve & prevent reductions in engine power, poor pickup, failed emission tests, low fuel economy, smoky exhausts & costly repairs that can develop when an engine is not looked after adequately. With 6 750ml bottles of cleaning formula & a sprayer.