Koch Chemie Green Star (GS) is a highly concentrated alkaline universal cleaner trusted by professional detailers and industrial cleaning operations worldwide. This phosphate-free, solvent-free formula delivers outstanding dirt and oil removal across a huge range of applications including engine bays, interior surfaces, workshop floors, exterior paintwork, wheels, and industrial equipment. VDA Class A compliant for use in automotive manufacturing and service environments.

Built-in corrosion inhibitors protect sensitive surfaces including anodized aluminum during cleaning, making it safe to use in engine bays and on precision components without risk of damage. Dilutes up to 1:3 for general cleaning or can be used at stronger concentrations for heavy industrial degreasing. One concentrate that replaces multiple different cleaning products across the shop.

If you are looking for the best professional all-purpose alkaline cleaner for automotive and industrial use, a Koch Chemie APC that handles engine cleaning, interior detailing, and exterior degreasing in one product, or a concentrated commercial cleaner with environmental credentials, Koch Chemie Green Star is a benchmark product in professional detailing chemistry. Available in 1L and 5L.