Digger, I too have used a spray after-run oil, but not what you have there. I have been using Sea-Doo Watercraft Storage Oil. It can be bought at any Sea-Doo dealer here in the USA. I have seen Sea-Doo engines that didn't use any and others that did, and I'm convinced that it works as advertised! I use it in every engine I have, both 2 and 4 strokes and have not had any problems or bearing replaced yet. I'm a firm after-run oil user.
Danny