My new Tanaka weed whip instruction manual calls for a gas oil mixture
of between 25:1 and 50:1. That seems kind of vague to me. My Echo leaf
blower calls for 40:1 and my Poulan chainsaw calls for 50:1. Running my
Poulan on a 40:1 seems to work fine, and I am planning on running the
Tanaka with a mix of 40:1. Is it super critical to stick with the
recommended mix for each piece of equipment ?
I often run an engine that calls for 50:1 at 40:1 because the 40:1
covers several engines that I have. However, I wouldn't go more than
the 40:1 in the 50:1 as it might cause plug fouling.
It seems like most newer 2-cycles are now designed for 50:1.
I'd run the both on the richer mix, the 40:1.
Worst case, fouled plug and some carbon
in the muffler. If you run too lean, the risk
is engine damage, and loss of warranty.
In regards the OP, they usually aren't fussy.
I'd run the richest mix in all the machines.
Christopher A. Young
Learn more about Jesus
I agree. If you have some eqpt that calls for 40 and some
for 50, I wouldn't have two seperate mixes. I'd split the diff
and go with 45.
On Sun, 02 Jun 2013 10:23:26 -0400, Stormin Mormon wrote:
That's what I do.
I save the original 2+ounce 40:1 oil containers that
came with the unit, and then I buy the replacement
two-stroke oil in standard quart sizes.
Then I refill the 40:1 containers, so that I always have a
convenient mixing procedure when I need more two-stroke gas.
TC-W3 oil is for water cooled (marine) engines. SOME TC-W# also meets
TM specifications, which means it is good for aircooled engines, such
as motorcycles and small powered equipment. Straight TC rated oil is
specified for most air cooled equipment. Non TM TC-W3 is NOT designed
to run at the higher temperatures generally experienced with things
like chainsaws and weed-eaters etc.
It is not critical in most applications, but an oil designed and certified
for use in a water-cooled outboard motor is not the opitmal choice for
lightweight air-cooled engines such as those found in weed wackers and
Better to be stuck up in a tree than tied to one.
Larry W. - Baltimore Maryland - lwasserm(a)sdf. lonestar.org
Looks like it's part of a well-equipped shop:
Still, the MixMizer seems to be simply a syringe, which, I guess
can be replaced with a standard small'ish measuring cup, right?
I'm puzzled by your terminology. "Richer" means more gas, doesn't it? A
50:1 mix has more gas than a 40:1 mix. The 40:1 mix has more oil and less
I use 32:1 in everything. Don't observe fouled plugs or other problems.
On Sun, 2 Jun 2013 12:24:04 -0400, "David L. Martel"
Common usage when talking of an oil/fuel mixture considers a "richer"
mixture to be heavier on oil. Adding the denser to the less dense -
like fuel/air - or adding the lesser to the greater - where rich/lean
would switch when you pass 50%
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