I looked on the the web site for equipment rentals up the road from me .they have two ones a 3000psi the other is 3500psi what one should I rent to get the yellow off my plow truck.

what is the Yellow?
road paint ?

not sure you would notice the difference between 3000 and 3500 because when you used the wider angle tips you have less restriction so you never hit max psi

max psi with a 0 degree nozzle will just take your factory paint off

if that is yellow paint over spray then buffing compound . if that is what it is you have primer , white paint , clear coat , hopefully a little wax and then the yellow paint.

buffing compound and a buffing is a very fine abrasive that should let you get the yellow off without getting any further than into your clear coat , then you can clear coat over or just use a few applications of a good wax

PSI is only one factor -- look at GPM also - probably more important than the 500 psi difference. Temp is also a huge factor - try hot water it works so much better.

I don’t think a pressure washer will help them dents

What exactly is the yellow you're trying to remove

It's old age the truck is a 01 the first owner probably never washed it.

so the paint is yellowing ?

that is likely the clear coat oxidizing

a buff and then coat with a good wax would be where I would start If I did anything

but seriously it's an 01 and you can't put your hand through the cab corners that must be some magical yellowing clear coat to have kept the rust off in WI for 21 years


it is a plow truck not a collector car even if it could have collector plate

just run it and save the money for something else

Don’t put the 3500 on any wooden surface. Probably ok on the truck but keep the nozzle at a distance and keep it moving.

Using a pressure washer to remove stains on automobile paint is generally not a good idea. To get the proper psi/distance from surface/duration of blast is a very fine line from going too far and removing paint down to the bare metal.
Greencountrypete is on the right track here. Compounds and a buffing wheel or by hand is the proper , safe way to do paint correction.

Wash it and throw some rocker panel covers on it