The BE 85.490.046 Pump Saver is an environmentally friendly, biodegradable formula designed to protect your pressure washer during storage. It serves a dual purpose: it acts as an anti-freeze, protecting the pump down to -50°F (-45°C), and as a lubricant that keeps internal seals and pistons supple. By displacing residual water and preventing mineral build-up, this easy-to-use solution ensures your machine starts smoothly and leak-free every spring.