Changing tranny fluid

[Rob Robinson]

John I am not a fan of purging a tranny. In fact my SOB tranny came with a
warning from Ford not to hook up to any system that forced the fluid out. I've
just switched the Bird over to Transynd and after the recommended mileage I'll
dump the stuff and refill with Transynd again for what Allison recognizes as
100% synthetic. Of course it won't be exactly 100% but it is close enough for
Allison so I'll except their recommended change intervals for synthetic from
then on.

Rob, Sue & Merlin
94 WLWB


Quoting John Suter :

>
>
>
> Hi Bob,
>
>
>
>   I try to avoid speculation in favor of facts
>
> whenever possible so the best answer I can offer is
>
> the objective: to purge the system of the residual
>
> non-synthetics, and achieve a true 100% synthetics as
>
> soon as possible.
>
>
>
>   When I began the switch to synthetics (engine and
>
> transmission; coach and cars), I asked that the
>
> systems be "pressure purged" (blown out) and during
>
> the first year I observed the same fluid and filter
>
> schedule as prior to switching. Others may argue that
>
> is super-cautious. My feeble response would be, "I
>
> can more easily afford a bit on the extra fluid and
>
> filters rather than on any catastrophic costly
>
> failure." My only caveat is to be your own judge, but
>
> try to avoid the "penny wise and pound foolish"
>
> syndrome.
>
>
>
>   Another thing I learned along the way is to watch
>
> for misleading terms such as products and services
>
> labeled "blended synthetics" which are not true 100%
>
> synthetics. This term, and others like it found in
>
> small print, are especially common in the automobile
>
> field.
>
>
>
> John
>
>
>
>
>
> --- Bob Lawrence wrote:
>
>
>
> > Hi John,
>
> > When you say a shorter usage, what do you recommend
>
> > when to redue.
>
> > Sounds like synthetic is the way to go for me.
>
> > Bob
>
> > 84 PT36
>
> > Tacoma, Wa. (Where we finally have sun for a couple
>
> > of days)
>
> >
>
> > --- In WanderlodgeForum@yahoogroups.com, John Suter
>
> >
>
> > wrote:
>
> > >   Additionally, to achieve the full benefits from
>
> > > synthetics requires purging the system of the old
>
> > > non-synthetics and that may take one or more
>
> > cycles of
>
> > > somewhat shortened usage, in the absence of a
>
> > complete
>
> > > pressure purge.
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> >
>
> >
>
> >
>
> >
>
> >
>
> >
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>
>
>
>
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