Apply SONAX Cold Cleaner S with a brush, sponge or SONAX Pump Vaporiser solvent resistant (04969000) and leave to work for a maximum of 10 minutes, depending on the degree of soiling. Afterwards, wipe off with cloth or, if oil and petrol separators are available, rinse with high pressure washer. SONAX Cold Cleaner S is fast releasing, does not form stable emulsions, and hence is caught by light liquid separators. Only clean your engine where oil and petrol separators are available. Before use, test for material compatibility in an inconspicuous area and ensure good ventilation.