Anon.II

To be clear: it isn't a worry about brand, per se, but about mixing brands--and comes from the ALL CAPS WARNING AGAINST IT in the manual. I gather from some of the descriptions of the baster-method flush, that it's deemed pretty fair at diluting the old fluid w/new ("just do it xxx times"). But that's missing a key distinction that Citgo makes--non-Gm vehicles--; they earlier say, FOR GM vehicles (only) "The product is backward compatible and can be used in all General Motors cars and trucks where DEXRON-III, DEXRON-IIE and DEXRON-II type fluids were called for." Wikipedia's entry notes that these "dexron"/"mercon" designations are more requirements/standards, than forumlas/recipes, and so can be achieved in different ways (which might not be so compatible w/each other--hence that "do not mix" warning--or w/other grades)!? --Anon.II

This is much my question, though re a '91 Legacy wgn, whose manual says to use any dexron-II type, but to NOT MIX BRANDS ! Now, I've no idea of the brand, and might in any case have trouble finding "-II" in this era of "-III" (I didn't see any in a cursory check recently). And "not mixing" implies flushing. I see another post (elsewhere) saying to: What's the turkey-baster method? Is it what is given as an answer, e.g. here? http://autorepair.about.com/library/a/1i/bl672i.htm Thanks much,