#4: Hotsy Brown

Hotsy’s Best Detergent for Oil Field Cleaning: A degreasing detergent specially formulated for the oil field that also works great on oil soaked or stained surfaces such as, frames and equipment. A non-butyl based product that works good in cold water, Hotsy Brown is a caustic based product and should not be used on fine painted surfaces or magnesium, galvanized or aluminum.