Bit of an old thread now, sorry about that. I bought myself a couple of spray cans of ACF50 a couple of years ago and still got some left. Cans were something like £12 each. You can get it from here http://www.f2motorcycles.ltd.uk/service.html or here http://www.elmers.co.uk/aviation/ and I have no connection to either of these suppliers. I think it's good stuff myself, as is Scottoiler 365.
..It's great stuff - use it on my R1200GS (!) check out the following:- Nippy Normans Goes a long way too... Scottoiler? on a shaft drive? are you quite mad..?
They say you learn something new every day - in retrospect, that was what I learnt yestrday - Scottoiler do some weird 365 anti corrosion stuff that I wasn't aware of... marvellous.
that F365 scottoiler is good but a bit runny so you really have to spray it on and leave and top up every now and again. Engine oil is good cos you can brush it on and it stays there, makes bike look a bit messy on the undercarriage with the filth from the road but it's easy to clean up when spring comes and the oil protects the bike from the salt and grime