Depends on where you are and what kind of tow truck. I owned a rollback only ompany for 18 years keeping all my trucks spotless. Specalized in 'high-line' cars and insurance company contracts.
While all my trucks 'worked', I would attend shows all over the SE and ALWAYS placed, usually won. (in my division) And.... depending on the show I ended up with "best of show" on lots of occasions.
I said that to say this; There are two kinds of washing for working tow trucks. The first would be a regular weekly washing. No wax, no buffing, but a good cleaning.
Thorough interior clean out first. Regular power washing, spraying the underside with hydrochloric acid, bleaching the bed(s) with the same. (Makes for a KILLER nice aluminum bed, but you'll need to play with the dilution to keep from removing too much from the bed)
Single soap down. Towel dry, wipe down with single stage / wax as you dry, wipe down interior and shine, gloss all exterior rubber, clean and polish all glass (newspaper). That should take you several hours minimum, maximum of 3 trucks a day for one man. (including lunch and a couple of breaks)
This price is based on a non-extended cab rollback or a F350/450 ~ C3500/4500 type single boom or wheel lift only type of truck. (Bigger trucks
I wouldn't even THINK of doing it for less than $150.00 per truck, say $500.00 for three as the wash/dry/shine only. Remember, those trucks make money, and anyone that doesn't care enough to keep a clean one isn't going after the right kind of business.
The 2nd cleaning is literally an all day thing. What is your day worth? What is it worth to the owner to park that truck all day? I've literally pulled a truck off the road for a WEEK when prepping for a show! :buffing: This is where you break out the metal polish! Now I've been out of the business (sold the company) 10 years now, but if you're doing the 2nd kind of detailing you seriously need to be looking at $250 and up for starters.
:bat:Working trucks get a lot of scratches in um' and I found that a decent carnuba was the best option. Do remember the hydrocholoric acid if you're dealing with working trucks. While not cheap, it's a freaking LIFESAVER for working the frames and heavy sprayed paint on the working ends of those trucks. It ain't too bad cleaning the grease off the beds either. (although you'll want a bucket of degreaser to use first if they have been hauling wrecks with busted trannys/oil pans/leaking coolant.)