1z Perls Gloss Shampoo is the best carwash I've ever used and it I've used them all. I use to use P21S until I discovered 1z. The other day I had a lot of tree sap and I needed to get it cleaned off quickly so I tried alcohol and water, nothing, them I used 3m adhesive remover, nothing - I mean, this stuff usually will breakdown anything sticky, but it was not doing the job, so on a wim I decided to wet an MF towel with straight out of the bottle 1Z Perls and I was amazed at how quickly it took the sap off without marring the finish. Seems to have a lot of lubricants, and definately safer to use than adhesive remover.