Seen a car wash using a high foaming tfr so I got my pickup washed out of curiosity and the fact it was bogging.
Now I use tfr for cony's, fsg and also my own motor but what a difference this stuff makes.
Literally spray on wash off, brilliant stuff. My tfr claims to do this but doesn't and requires brushing.
I'll definitely be buying some of this stuff could safe me a lot of time.
It's from Jigsaw

kidding Bonnymans in Ayrshire, currently using tfr from Aaron Chemicals (ebay) half the price but requires brushing.