The centre section of a Morgan never gets soiled in my experience. The wings are best dry brushed with the wheels off, but cover the splines if you have centrelocks. I've started to use a rubber glove which works really well. Pay particular attention to where the front wing attaches under the door. The fasteners changed over time but some brackets are open fronted and retain mud.
Yes my technique too but to get dirt and stubborn caked-on muck off, especially out of the rolled wire wing edges, I use copious amounts of petrol, brushed in, before spraying with ACF50. This petrol first to clean, followed by ACF50 or wax oil, is repeated on chasis, firewall and all other rust prone surfaces. This is on a never-restored 1968 Mog so I'm really trying to retard corrosion which,in some areas, has already begun. Seems to be working.
