ok, granted I have not checked the fluid in the PS probably ever... but why would the fluid go low unless there is another issue at hand?

Any suggestion on what fluid to buy? I have a local autozone and pep boys. I believe pep boys has Pennzoil Dex 3...

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2003 X5 3.0i Silver (build 07/03)
2006 X5 3.0i Blue
1977 Ferrari 308 GTB
1994 Ferrari 348TS Speciale #14/15
1989 Ferrari Testarossa