My E39 calls for ATF to be used in the PS reservoir, I've been using Valvoline Synpower ATF.
Your E32 may call for a Pentosin product called CHF 7.1, or the synthetic version called CHF 11S.
Check the manual, or look at the cap, mine reservoir cap has ATF written on it.
E39 - 1998 540iA Sport (11/97 Production)
E30 - 1989 M3 (44k miles)
1979 Triumph TR7, still have my first car ;-)
E21 - 1980 320i (sold at 130k)
E23 - 1986 735i
I am a BMW Car Club of America member, are you? <a href='http://www.bmwcca.org/' target='_blank'>http://www.bmwcca.org/</a>
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