They are all about the same. Their cleaning power is limited because
anything that's stronger would damage rubber and some plastics. As long
as they work - fine.
When they stop working (too much stuff in the carbs), the carbs have to
be pulled off, washed and/or rebuilt. I used acetone, it's a very good
solvent for the job. All rubber and acetone-sensitive plastic parts, if
any, should be removed to avoid damage (better solvents do exist, but
they are not as easily available).

In article ,
Shortwave Sportfishing wrote:

On Fri, 11 Aug 2006 09:18:33 GMT, "Ron Knapik"
wrote:

To prevent this buildup during winter storage use Evinrude Johnson 2+4
instead of stabil.

2+4 is the exact same composition as Stabil.

Other than specifically cleaning the lines, Stabil should be
sufficient.