Thanks DJ and Michael G, Ive had a look at the ACF50 on the web . The seven very much shares a similar environmental experience to enthusiatically owned motorcycles ( close to the ground, exposed to all elements and a performance life) and it appears to fit the bill. I am sure ACF50 would be great for the cycling enthusiasts too!!
From my research of all these products on the net and all your help i have deduced the following.
1. Waxoyl is a good product when applied warm. Ideally in good summer weather and sometimes diluted to thin it to help application and penetration.
2. Dinitrol is easier to apply in that it doesnt require being warm to apply at a viscosity that penetrates well.
3. Dynax-50 can be applied by brush or roller or spray and so can be cleaner to apply and easier if you have limited facilities. If you are not spraying into tubes or box sections this has an advantage. There are several professional firms that provide a cleaning and application service if desired for these products.
4. ACF50 can be sprayed on or wiped on. It is unobtrusive but does require a refresh every year. It stops existing corrosion in its tracks and can be applied when the vehicle is damp. Again this product suits application in limited facilities (outside). With no brown or black film you can still see the cars surfaces. It will creep past dodgy rivets and into cracks and corners.
5. Any of the above are very good products when applied well and better than no protection at all.
6. A big factor in choice are the facilities you have available in which to work on your car and the ambient temperature. Thanks again. Fil M