Surfex-HD can be used at a concentration of 1-2% on upholstery.
FAQ Category: General
Surfex-HD diluted 10-20% in water.
Surfex-HD diluted 1-2% in water.
The best product to use is Surfex-HD diluted to 2-3% in water.
Auto-Wash is best for this.
No, the water hardness will not make a difference. The volume of bubbles created may differ depending on the hardness of the water, but this will not affect the quality of the cleaning.
Cleanser-Fluid will remove both sap and tar from paintwork. It will also remove sap and any remaining wax, polish or sealers from the paint surface.
Surfex-HD is intended for greasier road films and Auto-Foam for drier films. However, they are both excellent generally.