If it has full roller bearings (likely) back it of fto 50/1. If not stay
at the 30ish ratio.
TCW-3 far exceeds the specs of the oils of yesteryear.

-W

"Jeff Burke" wrote in message
...
On Wed, 4 Apr 2007 20:59:33 -0700, "Danlw"
wrote:
"Michael" wrote in message
...
Could tell me what the fuel mixture to use --oil to gas ratio--the
engine
is an 1984 2.2HP Mercury?

Thanks , Mike

Actually, it is just as much based on the oil as the engine. If you use
an
oil that calls for 50:1, it will be fine. For example, I have a string
trimmer that calls for 32:1 in the specs. I use a quality Husky
chainsaw
oil at 50:1 in it, still runs fine after 6 years. I would as another
posted
recommended, run a bit of extra oil for the first tank if not run for a
while. Dan (danlw)

Well! This might explain something I've run into. I have a 1957 Johnson
7.5HP
AD-11 motor that is in pretty good shape, good compression and all. It
calls for
a mix of 16:1 using 30wt ND oil. I bought some modern 2 stroke oil (TCW3)
and
was told that the 16:1 mix was still the right ratio. Sure smokes a lot.
Maybe
I'll back off to 32:1 and give it a try. Would you think that this might
be
better than 16:1?