Despite being made by the same company, this is a very different product from Swarfega’s all-conquering concentrate. The Powerwash is designed with immediate application in mind, so it doesn’t require dilution and can be poured straight into a pressure washer. However, this greater ease of use comes at the expense of ultimate cleaning power. The effect of this product on our ingrained stain was only marginal while, surprisingly, most of the fresh oil stain was left behind, too