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Old 06-12-2010, 08:27 AM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
Join Date: Mar 2008
Posts: 25,236
Mein Auto: 02 BMW 525i M54 auto 130K
How much volume of power steering fluid do we have in the E39?

How much, in total, power steering fluid is there in our E39s.

I scoured the Bentley and owners manual and didn't see this information.

Here is what I have so far in the E39 fluids summary.

What else do we need to say about power steering fluid?

- Power steering: Dexron III ATF (realistically, Dexron VI ATF because Dexron III certification is no longer available from GM) Bentley page 020-20. [Volume: It has been said to be just under 2 quarts; I used about a quart to flush twice just my power steering reservoir using a turkey baster to remove fluids out the top.] Note: I6=rack and pinion attached to an aluminum subframe, V8=recirculating ball and nut attached to a steel subframe. Replacement Interval: Bentley says it's "permanently filled"; but most of us would suction out and refill the reservoir with about a quart of fluid every few years because it's a hygroscopic fluid and the permanent filter on the bottom of the reservoir doesn't prevent the fluid from becoming dirty. Some even replace the reservoir in order to have a new filter. Most also replace or cut off the tip of the bottom hoses whose clamp often allows leaks.

Last edited by bluebee; 06-21-2010 at 01:12 AM.
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