F3 FAST FOAM FILTER CLEANER Completely cleans from start to finish in less than 2 minutes ! Works effectively on Petroleum and Biodegradable filter oils. 1 Quart is reusable and will clean 10 filters beforereplacing No Odour, Biodegradable, and Non-flammable Self-activating soap when rinsing out in water Safe on glue joints and the foam itself