Keeping an aircraft clean is a very important aspect of being an aviator, especially once you own one yourself. Aircraft require special attention to the type of products we use to clean them - ammonia-free, bleach-free... so many household and automotive cleaners are way too harsh to use on the surfaces of an airplane, and on top of that, we've had to accumulate so many different types of cleaners for paint, windows, engine, and interior. Not anymore. Release Ultra Concentrate is my replacement for all of it. Release relates to the soil, so it's completely safe on everything on the airplane from engine and belly grease, to the windshield, to the avionics and upholstery. It works so well that I even keep bottles of Release dilute it in our hangar, the plane, at the house, and even in my truck.