As the name can suggest, Q²M APC (All Purpose Cleaner) can be used for various task such as wheel arch cleaning, engine bay degreasing, interior stains removal and many others.Its cleaning power depends on the correct dilution for the required application. It starts from 1:5 for external applications up to 1:15 for interior cleaning. In extreme cases, like dirty wheel arches or engine bays, it might be used as a 1:1 dilution.