Talk Morgan Forums Morgan Sports Cars Maintenance & Servicing How to wash your car!

I don't personally use a pressure washer on my cars, but to be fair to those that do, it's very easy to avoid doing any damage by simply using them from farther away. Although it's true that the jet can do an awful lot of damage when used close up, the effects diminish very quickly with distance.

For a demonstration, take a garden hose with a standard nozzle on it adjusted to give a narrow jet and squirt it up in the air, 45 degrees for max range. If you have decent water pressure it'll go a significant distance. Now do the same with a pressure washer. The water comes blasting out of the nozzle with a couple of magnitudes more pressure than the hose, but won't go anything like as high in the air. I can squirt water from my garden hose a good 20 metres or more across the garden but the pressure washer turns into mist in less than 5.