and use a wax polish afterwards because it strips the existing polish offif you use TFR make sure it is the non caustic version
Jet washer. (it was on the channel 5 programme from the caravan show yesterday)
i just use wash and wax all year round by hand on vehicles and twice a year a quality polish. never use tfrNothing fancy, a long soft bristled broom and turtle wax shampoo.
Turtle Wax Zip Wax Car Shampoo 5 Litres | Toolstation
Car shampoo provides a 1-Step clean and shine with added Carnauba waxes to provide a water repellent finish. Cleans oils and road grime from all exterior surfaces. • Clean and shine in no time • Super concentrated formula deep cleans, shines and adds Turtle Wax • Cleans oils and road...www.toolstation.com