Type "F" ATF is specified for the power steering on my 1992 Volvo 740, which I've been using. I don't suppose Dexron would do any harm in a pinch if I didn't have any Type "F" handy. Does anyone here know, or could guess, why Volvo would have specified Type "F"? All I know about it is that it's supposed to give firmer shifts if used in place of Dexron in an automatic transmission.