I use a Gilmour Foamaster II. I bought this foam sprayer based on a friend's recommendation that works at a big warehouse in the butcher shop. They use this sprayer for specialized foam in cleaning down machines used for raw beef, chicken, pork, and the like.
I am more than impressed. I bought some good quality chemical guys soap, fill the sprayer half-way with soap and fired her up! I use the "D" setting and get huge amount of foam all over the truck...top...bottom...and wheels. Then I scrub-a-dub-dub with a 10" quad brush.
The bottle unhooks from the sprayer with no effort. Then we rinse. BAM! We're done and enjoying an adult beverage.
Big truck done in an hour. Used to take me 2+ hours with buckets.
Hellwig Sway Bar, Moog SBL’s, Carven Exhaust, AEM Filter, Lamphus Horn, DRL’s, Grille LED’s, Yellow Fog’s w/ Lamin-X Covers, 15” Antenna, Tyger Tonneau, EGR Visors, Debadged, Tint, AMP Cargo Extender, TS Stall Mat, Husky Guards & Mats, Bayou Goat Mount, Anker Dash Cam