A904 Cooler Line

Thank you so much for the reply! I really appreciate the method for replacing that external filter with one in the trans! I have had several folks warn me about draining that old fluid and putting in new, which I would have to do of course to add the in-pan filter. They said I might then have problems, something about the old fluid having particles in it that keep the bands and clutches working, and with the new clean fluid, there might start to be slippage. Do you know if there is anything valid to that thinking? Thanks again!

Some times, replacing the fluid will cause problems. That is caused by the new fluid having fresh additives, that are not depleted, and that cleans the trans. If your trans is in that bad condition, it should be gone through, anyway. While having the pan down for the filter replacement, I would suggest adjusting the bands. What kind of problems are you having with the trans?