"This is my first use of a TFR product as part of my car cleaning regime. I put this in a pressure sprayer and added a litre of water to dilute. I didn't know if I should use it neat and there was nothing on the instructions. Anyways, I think I could add more.... Sprayed on car, and hosed off after about 5 mins. Very good results. I then followed with a 2 bucket wash. Will be buying more."