Butyl-based degreasers are excellent for attacking petrol-based greases for fast removal. That is why Formula Fs is our best degreaser for cleaning engines and heavy equipment. Whenever you’re cleaning engines bays and equipment, you must make sure that the degreaser you’re using is strong enough to break down that grease so you can hit it with low pressure. This process helps clean engine bays and equipment faster due to the excess greasy falling to the ground rather than being blown onto the other side of the equipment.