Can't really say if this is a new trick but-- I take Old English Scratch Remover (medium or dark), a plastic cup and a 1" or 2" paint brush. Shake the Old English into the cup and apply the scratch remover with the paint brush to all the paneling. If it has been a year or more since this has been done.. the paneling sucks it up like a sponge. Let it dry for a day or two then apply boiled linseed oil in the same manner. Your paneling will look like new!