Very interesting, though I don't really know how to evaluate this experience
with a 2-stroke motor.
on 7/30/04 6:22 AM, Bob Howard at mgbob@juno.com wrote:
> Max,
> That's the way it seemed to me also. Yet here is my experience with
> a very-worn Tecumseh 7 hp engine on a Ariens power handle that drives
> snowblower in winter, lawn vacuum in spring and fall, and a reel or
> rotary mower all summer.
> Last winter, when it was in snowblower mode, I found that I was
> lifting it off the floor with the starter rope when attempting to start.
> Figuring that the thing is well worn, beat to death essentially (I was
> already researching replacement engines), using about 1/2 pint of
> recommended 30 or 20/50 in an hour of snow blowing or mowing, I drained
> and refilled with Mobil 1 5-30.
> As expected, it started easier. Quite unexpected, though, was the
> remarkable decrease in oil burning. I didn't add oil for the rest of the
> winter. And now that mowing season is here, I am adding 1/4 pint of oil
> after every six hours of mowing. How can this be? Surely it's not from
> stuck rings, unless rings can stick during regular use. This 20+ year-old
> engine runs three to four seasons of the year, so it is not unused for
> long periods.
> Whatever the cause, it's a great improvement in consumption.
> The one disadvantage found is that in this configuration the vapors
> from the crankcase vent are directed toward the rubber drive-wheel for
> the unit's propulsion system. With dino oil the thing would get cruddy
> and greasy but would propel OK. Now, with the Mobil 1, I have to clean
> off the collected oil mist as it's so slippery that the rubber drive
> wheel will not grip against its drive plate.
> Bob
>
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
|