Loss of power...can't pinpoint why?

[VX KAT]

IIRC, the consensus was that if you have an older, un-maintained tranny, you should still change the fluid & filter but you should NOT flush it. Should probably stick with standard fluid rather than synthetic as well.

I thought that whole issue was only referring to the engine oil, not the tranny...???? Some say don't switch over to synthetic motor oil later in the engine's life as it's detergents may clean the varnish and other crude a little too well and leaks may be uncovered when the crude plugging the hole is removed.

I might have somehow missed the commentary about the tranny though....??