My 1964 plane has what I can only call a "old machine" smell. Reminds me of visiting an old Navy boat in NYC: steal, grease and oil. I don’t mind but my daughter comments every time; son pipes up too. It eminates from the pedals, control cables, hoses, old paint and firewall. I've taken some grease remover to some things but it still lingers. Anyone got any pointers?