Nothing special really. It just takes a few minutes every time the car is washed - about once a week. I just wash the car, rinse and dry with a micro-fibre cloth, and finish off by wiping dry the inside of the door shuts, doors and under the bonnet.Congratulations Graham on a superbly kept engine. I cannot seem to get mine anything like that, with so many tight areas that I cannot get the cloth in. Any tips?