wrote:





Probably a spankable newbie question, but you mention TCW-3. I wasn't
looking at grades of two-cycle oil. Never noticed a weight grade on
them.
Should I Be?

Two cycle oil used to be sold by weight, I still have some SAE 30 & SAE
40 Quaker State bottles, but TCW-3 is a standard for ashless oil
primarily for water cooled engines(& used broadly beyond boats), which
superceded TCW-2 & TCW oils. It is a voluntary NMMA rating, if you are
using a recognizible brand of outboard oil you are OK. Just don't use
those little cans of Poulan or Deere or McCulloch oil meant for string
trimmers or chain saws. They often don't have the TCW-2 or TCW-3
rating, and are usually specified to be mixed at odd ratios to make
smaller batches of mixed fuel for household/homeowner use.


I read 32:1 and was also told that 50:1 is Ok with modern day
2cycle oil.

Sounds good.


Umm.. 32:1 sounds good or 50:1 Sounds good?


50:1 Sounds good - see above.

Rob

Been there, done that - "glazed plugs". They look good,
but they get some invisable conductive glazing, and short.

Replace the plugs, and go with nothing more that 50:1
of the XD-25 oil available at Gi-Joes, and everywhe
http://parts.evinrude.com/info/parts/oil/oil.htm


"trainfan1" wrote in message
et...
wrote:





Probably a spankable newbie question, but you mention TCW-3. I wasn't
looking at grades of two-cycle oil. Never noticed a weight grade on
them.
Should I Be?

Two cycle oil used to be sold by weight, I still have some SAE 30 & SAE
40 Quaker State bottles, but TCW-3 is a standard for ashless oil
primarily for water cooled engines(& used broadly beyond boats), which
superceded TCW-2 & TCW oils. It is a voluntary NMMA rating, if you are
using a recognizible brand of outboard oil you are OK. Just don't use
those little cans of Poulan or Deere or McCulloch oil meant for string
trimmers or chain saws. They often don't have the TCW-2 or TCW-3
rating, and are usually specified to be mixed at odd ratios to make
smaller batches of mixed fuel for household/homeowner use.


I read 32:1 and was also told that 50:1 is Ok with modern day
2cycle oil.

Sounds good.


Umm.. 32:1 sounds good or 50:1 Sounds good?


50:1 Sounds good - see above.

Rob

"Mr Wizzard" wrote in message

Replace the plugs, and go with nothing more that 50:1
of the XD-25 oil available at Gi-Joes, and everywhe
http://parts.evinrude.com/info/parts/oil/oil.htm

OMC's XD-25 is more marketing hype than oil, perhaps it has an additive that
can stop the new E-techs from blowing up, but I doubt it. ANY good TCW-3
at 50/1 is fine for that older outboard.

Note that Mercury and OMC do not own a refinery.... thier oil is made to
specs by the LOWEST BIDDER.

-W

"Clams Canino" wrote in message
k.net...

"Mr Wizzard" wrote in message

Replace the plugs, and go with nothing more that 50:1
of the XD-25 oil available at Gi-Joes, and everywhe
http://parts.evinrude.com/info/parts/oil/oil.htm

OMC's XD-25 is more marketing hype than oil, perhaps it has an additive
that
can stop the new E-techs from blowing up, but I doubt it. ANY good
TCW-3
at 50/1 is fine for that older outboard.

Note that Mercury and OMC do not own a refinery.... thier oil is made to
specs by the LOWEST BIDDER.

Could be, but after many many years of playing with 2-strokes
in high-end large model airplanes with expensive engines turning
up at 12K RPM's all day, and numerous outboards, I find XD25
to be almost as good as Redline, BelRay and Yamma lube blend,
and I judge them on: plug glazing, deposits, wear, and exhaust residue.
Not all TCW-3's are the same, I had issues with Valvoline's TCW3.
You said: any "good" TCW3, which implies, and is an open admision
that there are "bad" TCW3's (otherwise you'da said just "any" TCW3).





-W