Juliain,me and RM have added a dispensing part to it now so how about "processor 3 in 1" ?
I will add a relevent piccy at the weekend
Its only for the wvo as the bio would be dispenced from its wash tank/tower
The outlet to car,from the bottom filter will have a tee in it going to the pipe from the top filters to settling tank,inline will be a pressure valve so when you release the trigger the valve will divert the oil back into the settling tank,if you follow 
its cost just under £25 so worth doing i think
Ok, best I hold fire on the graphic until I get details of the dispenser. Have you thought of adding wheels and a draw bar? Then you could tow it on your collection round and call it a 4 in 1.
But no, hang on ... if you added a fryer and rented it to the pub you could have a 5 in 1, the possibilities are endless!
