Transmission Fluid Change

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10-23-2013, 09:09 PM

#11

zeroptzero

Join Date: Oct 2009

Location: Ontario Canada

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I do mine every driving season. It's a bit of overkill as I only drive about 3k miles per season, but at 11 years old my tranny still drives like new.

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10-25-2013, 06:13 AM

#12

cosmomiller

Join Date: Aug 2012

Location: Foothills East of Sacramento

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Quote:

Originally Posted by XxMerlinxX

I've only ever heard this myth in association with automatics. The theory is that as the transmission fluid stays in and ages, more and more friction material grinds off into the oil, which creates more friction, and more grinding, until all of the material in the oil is the only thing keeping the clutch pack from slipping. Old oil gets replaced with new oil and suddenly the transmission starts slipping because there's no friction material in the oil anymore.

That is the theory with my 94 T Bird. It developed a characteristic shuddering in 2/3rd gear at moderate loads. Draining the trainy on the thing is a pain, have to line up the torque converter etc, so I just took it to my regular mechanic as he has the machine to replace fluid while running so no old fluid is left behind anywhere. Flushed, replaced all of it, 15qts worth of MerconV and boom! Problem solved immediately. The new fluid worked wonders but once again, some mechanics have this superstition about "old" fluid.