[speeder]

On a hot pressure washer, everything is different and made to stand up to the heat from the pump to the gun to the hose. Running extremely hot water through a regular pressure washer wouldn't work for long. And "sort of hot" water would not do much more than cold. My hot PW makes steam when it gets really hot and no damage to anything.

If I could get a smaller one, I would. Like a tiny one for door hinge areas of nice cars, etc.

There is a high end detailer in SoCal called Dr. Detail that specializes in steam cleaning. They do show cars, (we're talking high level concours cars worth $$), and they charge a fortune. The before and after photos of undercarriages on their site are mind blowing. They use nothing but hot water, not one drop of chemicals. They get cad plated fuel lines and other parts looking new w/o removing finishes.