Question about 1991 BMW 7 Series

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Need to know what kind of power steering fluid to use?

Need to know what kind of fluid does a 1991 BMW 735 iL power steering use. I don't have the cars manual and have been told different things.

Thanks !

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  • mark brown
    mark brown May 11, 2010

    hi, what colour is the fluid that is in the resivior at the moment?

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Your car, being a 735 iL (the iL being the key here) requires what is called Pentosin 7.1. This is a mineral based hydraulic fluid used in BMW's with self leveling suspension. Since your car is an iL you have self leveling suspension. Not a lot of parts stores carry this fluid. NAPA has it, if it's not on the shelf they can order it. BMW dealers also stock it. The same pump that runs your self leveling also runs your power stearing and they are filled in the same location as they share a common resivoir. This resivoir is located in the engine compartment on the driver's side and looks like a black bottle with a screw type cap.

Posted on May 20, 2009

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