Most people that are in to boats are cognizant that Collinite is the manufacturer
of some of the best protective applications in the industry for marine products.
I've been using their paste wax #885 on my automotive vehicles.
It's specifically formulated for automotive and aeronautical products, but I've been
using it for almost 20 years and I'm ecstatic about results like this:
<img src=http:\\members.roadfly.com\mikecanada1\P4140145.jpg>
I apply it religiously every 2 1/2 months, after prepping with P21S Paint
Cleaner and it just seems to provide an almost impenetrable shield (emphasis
on 'almost') against stuff like acid rain, salt, bird poop, bug kamikaze's and other
general junk that ain't too hip for your cars finish.
I even use it on the wheels(after cleaning and prepping with BMW Wheel Cleaner).
<img src=http:\\members.roadfly.com\mikecanada1\Pc220075.jpg>
It's extremely easy on, and also very easy to buff off.
I'm not sure of any test data in regards to #885, but the empirical data that I
have experienced has convinced me that I will be using the stuff for at least
another 20 years (if only because that's how long it'll take me to go through the
inventory that I have remaining on hand.