Did you try looking up a replacement or cross reference for that antifreeze? Aren't most antifreeze safe for aluminum radiators these days? I just don't know what special requirements this Bently would have? Call a Bently dealer and ask if you can't find a substitute online.
I saw a spare tire tool kit for your vehicle on ebay. A little over 500 bucks. That is a little pricey for me. You can take a look, see if that is what you need? I should have taken a snapshot, but, I didn't.
