OK, I've seen two cycle oils that are formulated for water cooled
engines,a nd als0 two cycle oils formulated for air cooled engines.

I know the two cycles have a higher operating temperature that isn't
controlled by liquid and a thermostat.

Does anybody know of a web site that gives a good explaination of the
difference in the formulas? And does synthetic cover both types of
engines?

BTW, I will be running marine grade in my boat, and air cooled in my
weed eaters and chain saws.