bug and tar remover is perfumed and colored kerosene and/or naptha. WD40 is also largely kerosene with a little
light oil.
btw, traditional 'wax' as in carnabu is pretty much obsolete these days... modern surface sealants like poly coats and ceramic coats are far more durable AND less work to apply once the surface is properly prepared (which might require buffing with polishing compound before applying the sealant).