Can WD-40 be used for removal of yearly long dirt on powersteering bottle and motor and for cleaning of Car AC Compressor???
No.You need a degreaser. WD-40 is an anti rust, stops squeaks and can loosen the locked nut bolts because of its high penetrating power.
yes it can but its quite weak for this, why not use some ATF+kerosene mix to clean out the grease nastiness.
Ok i use it, Kerosene + ATF