Check the label. My bet is the label tells you to use Pentosin in the power steering circuit.

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'95 525i 5 speed, built 5/94, with a 93 m50tu engine
'94 540it built 3/93, converted to 6 speed with a 93 e32 m60 engine
'01 540it, built 6/01
'03 325i 5 speed, built 9/02
'10 mini 6 speed