The time I spent as a detailer I never had a heated pressure sprayer. All we did (and it works great, I'd do SCUMMY cars that came from the auctions, and went to the dealerships) was use a good degreaser and spray it all down very well. Let it have about 5-10 minuets to eat at the gunk and then just hose it off @ the car wash. It'll look dry and kinda crappy after all of that, so spray all the plastic and rubber down with armor-all type dressing, give it a minuet and wipe it down. Cake
