I need some help i've got a fleet of trucks to wash 40 trailers and 40 tractors and its alot of work and it takes alot of time maybe i'm doing it the hard way. does any one have any short cuts or some tips to make the job go alittle faster or smoother.the trucks have alot of crome on them. what type of chemical works on the crome as well as the paint. any suggestions will help. (i hope). thanks.