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Technology has made this process so easy that I can't see doing this yourself unless you're truly strapped for cash or you just want the experience for its own sake. Go to any place that has a T-Tech machine or similar device. It is hooked into the transmission cooler lines and uses the internal trans pump's own pressure to move the fluid. It intercepts all the old fluid and injects fresh fluid in its place.
Of course, these machines do nothing for your filter, and if you suspect it may be dirty, you'll want to have a pan drop done first to gain filter access. This will also cause 1/4 to 1/3 of your total fluid to be dumped, which will have to be replaced before the T-Tech does its thing.
If you have a really dirty transmission, you should be careful. There is a risk that a full blast of fresh fluid, with its detergent ability fully intact, may suddenly wash loose a bunch of accumulated crud, which may then overwhelm the system, causing failure. My unproven thought for a strategy is this (I've never let one get this dirty...): First do a pan drop/filter change, replacing just the fluid lost in that operation. Several days later, use a suction extractor to pull a quart or two at a time from out of the filler tube, and replace it with fresh. Maybe do this once or twice a week, each time guaging the transmission's response, and doing it until the fluid becomes relatively clean looking. Then go ahead and flush.
Last edited by ekpolk; 04-06-2004 at 08:49 PM.
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