I’d tinkered with the settings of lance until I was getting it thick enough (to my eye). Van was the guinea pig. Defo removed plenty off my van but next to nothing off Clio as it’s never that dirty.Was that picture the 'height' oF the foaming Ben.....or just a mid-way through shot ?
If you can achieve a seriously snot-like consistency that will dwell on the car for a good 5 mins; it will drag off all sorts of road-crud. Which you'll see by the cleanliness of your car....and the colour of the foam as it comes off. [Well. Not 'snot-like' in the case of BiltHammer Auto-Foam.....butthat stuff really works none-the-less].
I would think if you didn't see this; its a combo of an already cleanish car, not enough snow-foam or an ineffective lance presuming the snow-foam itself is good - which i'm sure it is.
Have you used anything else / tried another process previously as a pre-wash to remove grime ? Traffic film remover, Citrus spray etc......
***Maybe you can experiment later on the other two cars in your driveway
So how do you rate the jets anyway !!!!!
Will revert to valet pro citrus pre-wash and a pump sprayer me thinks!
Fan jets were good. Much better