[YourConfused]

I am also a fan of the T-Tech machine as it works as svxcess describes. Being that I don't like others touching my car I installed an external filter so I can just change that instead. A filter and cooler will keep the trans fluid happy for mannnnny miles.

Oh, and for those who have had their trans fail soon after a flush, well it was about to go anyway. I use to make customers sign a waver if I thought their car would be harmed by a flush in any way. If the thing came in with black and/or burnt fluid, a ton of miles or didn't shift proper on the 'beforehand' test drive then I would rather loose the money than have someone pissed at me. Sadly most people out there just see suckers (car owners) with their wallet open and don't know enough or give a crap about the effects of such services and how the car may be effected by it.

Originally Posted by svxcess

Starting at 42,000 miles, I have had my tranny fluid "exchanged" every 25,000 miles by my Subaru dealer and have not had any problems to date.

The SVX Master Tech told me that, like most good flushing machines, it uses the transmissions own oil pump to move the fluid. With the engine running, the old fluid is pushed out while the new fluid is drawn in.

Actually its more of a fluid exchange than a flush. It uses the power of the operating automatic transmission to push the old fluid out, while drawing in the new fluid. I believe they are using the T-Tech system.

The mechanic connects the ATF hoses to the machine (which is filled with about 15 qts. of ATF. The car is then started and the exchange starts. The vehicle's own transmission pump regulates the exchange process, guaranteeing that proper pressure and fill are maintained. Using this much ATF guarantees almost 100% fluid exchange.

Since there is no additional pressure used to in this process, other than the tranny's own ATF pump, I wouldn't think there is anything that would disrupt or dislodge anything. It is just moving fluid at the same rate it always did, only the fluid is always fresh.

Still running strong at 119,000 miles... I use either Mobil 1 synthetic ATF or Red Line High-Temp Synthetic ATF.
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