Permatex Fast Orange Grease X Laundry Detergent is the first professional grade mechanic's laundry detergent with a built in pretreater specifically formulated for washing automotive stained clothes. It removes up to 99% of fuel, oil stains and eliminates exhaust odors. Also the proprietary soil release/antistatic agent actually helps repel future soils. The advance formula also helps to keep your washer clear of residual grease.