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I would agree that the full flush is simple. I consider it so easy, it's almost amazing that everyone doesn't do it. It's even SAFER than draining the pan in my opinion, because the threads on the drain plug are so easily stripped.
What you have described is what I consider to be normal post-flush behavior. You can notice a very defined 1-2 shift when the fluid is very clean. I just posted that in another thread, much to the same effect. There is no need for alarm. The only cause for alarm is, in fact, either a delayed (or nonexistent) shift between gears, or a slipping condition which would be equally problematic. The harsh/crisp shift is a characteristic of the Aisin Warner 70 and 71 transmissions. Some transmissions are smoother, and some are not. There are degrees of crisp shifting, and each transmission seems to have something of a personality.
The problem is likely not in the fluid choice (as Mr. Ringlee said; Dexron III only which is what you used... right?) but more because you have become acclimated to the comparatively sluggish shifting of dirty fluid. The amount of debris that travels through the transmission during operation is nothing short of astonishing. I ran the drain fluid through a coffee filter and ended up with a whole filter coated with junk, that had come from the transmission cooler. Much of it is thrown out of the trans during a fluid flush. The rest is usually too big to come out of the pan, and is better left alone. Dropping the pan is virtually unnecessary, but flushing the transmission is a great idea. How can you beat that kind of preventative maintenance, for only $25 for a whole case of trans fluid?
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1992 940 wagon, 72k
make people envious; smile often.
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