Cleaning Gillespie painted surfaces

[MidnightDuramax]

I have a few trucks painted with the 383 color Gillespie. I am wondering what is the best way to clean it that won't scuff or scratch the **** out of it.

 

[B3.3T]

I use a high pressure washer and car washing soap.

 

[MidnightDuramax]

Do you just use the pressure washer to apply the soap as well. I figure if you use any kind of brush or sponge that it will scratch it.