The stuff you see streaming down the inner wings and front wing/front panel join is that cavity wax? Im looking for a decent one for the insides of freshly painted doors and boot lids and behind arch trims etc and waxoyl cavity wax which they do with injection kits seems to be the best stuff according to the classic car sites ive been browsing..just wanna check this is similar stuff as the factory apply...not stone chip or exterior protection.. but inner panel wax?