Oberk Aps All Purpose SoapOberk APS is a unique product as far as "APC" is concerned. It is a 9. 5ph Alkaline cleaner that is plant based which means it can be used on nearly any surface from paint, tires engines bays and when diluted appropriately even interior surfaces. Being a light alkaline it will degrade waxes and sealants over time, however when used as a pre wash on ceramic coatings it will clean out the coating and bring back some water behaviour etc so it is perfect