now the 7 meter long Colossus is heading for the wash unit the biggest of its kind far and wide you have molecules every large engine is washed here on average the procedure takes five hours at a temperature of 70 degrees the engine is washed with the detergent and then dried for paint spraying it's a really tough job clad in a heavy protective suit the man with the high-pressure cleaner has to cope with heat noise and damp after five hours the engine is spotless above all it is free from grease essential if it is to be sprayed later