My go-to shampoo has always been Adams's but when I heard about Koch Chemie, it got me really excited to see what they had to offer. After doing a couple of washes with GSF, I realized I'd found a better soap. It's a bit slicker than Adam's and a lot thinner, so it pours easier. It foams just as good but my favorite part is that it doesn't reactivate after foaming. It's pH neutral, so it's safe for waxes and sealants.
How I use GSF:
For dilution, I put in 150ML of soap and 750ML of water in a MTM PF22.2 foam cannon.