Any detergent will work that is designed to strip grease off of dirty plates and pans, lol!!

You can also use a solvent, such as Prep-Sol which painters use before painting a car as a wipe down to make sure there are no contaminants, wax, etc...,
Actually, this works great.
Before I Zaino, I started using this method "if" I already had a coat of "other" sealant on the car.