Hi Martin, There is plenty you can protect underneath and so it's well worth getting your car up in the air and applying your favourite wax. I am now using Bilt Hamber Dynax UC wax. Fantastic product that when sprayed on fine gives an almost smell free, dry touch, wax coating that does not come off easily. I used it on everything, alloy chassis and all linkages. If you get any over spray on the paintwork have fun trying to get it off. Thoroughly recommend.