As stated before - use mid grade gas and you will be fine. On 2 stroke
engines you have no valves to worry about. However, you do have preignition
issues to worry about. The lead helped w/ this.
When leaded fuel went away - outboard manufacturers recommended you use at
least 90 octane fuel in the older engines or change the head gaskets to a
thicker gasket to reduce compression to prevent preignition.
Some will say use the cheap stuff but no more than you burn in a boat - the
10 cents a gallon is cheap insurance in my opinion.

--
Tony
my boats at http://t.thomas.home.mchsi.com

"Jeepers" wrote in message
...
In article ,
"Stanley Barthfarkle" wrote:

If these engines are in severe duty service, owners
should consider installing hard seat inserts or using lead substitute
additives to minimize valve recession.


Mine doesn't see sever duty unless going all out across a big lake is
severe duty. I used lead additive in the tank for my first fill up (I
just bought it) due to the label. Was Iwrong in doing so? Do I not need
to add lead? I have no idea what sort of valve inserts this engine has.

--
It's no good unless it makes your eyes water.