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Old 08-04-2011, 04:39 PM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 20,167
Mein Auto: 02 BMW 525i M54 auto 130K
For the cross linked record, I just updated the power steering fluid section of the E39 one-page glovebox fluids printout:
- DIY Glovebox & Bentley supplement: 1-page summary of the dozen recommended E39 fluids

Quote:
- Power steering: Dexron III ATF Bentley page 020-20. (realistically, that means Dexron VI ATF because all GM Dexron III licenses expired at the end of 2006 & were not renewed by GM). Note: The E39 I6 (i.e., rack and pinion steering attached to an aluminum subframe) does NOT have a power steering drain bolt on the bottom of the steering pump; the E39 V8 (i.e., recirculating ball and nut attached to a steel subframe) power steering DOES have a drain bolt on the bottom of the power steering pump. Replacement Interval: Bentley says it's "permanently filled"; but most of us would replace the hygroscopic power steering fluid at 30,000 miles; some recommend removing the 8 ounces (250 ml) in the reservoir at every oil change - and removing the T20 Torx bolt on the permanent reservoir screen every 5 years to clean the circular filter more thoroughly to prevent cavitation - and to replace the power steering cap o-ring every five years to prevent misting. [Volume: about 2 quarts to replace; otherwise about 1 quart to flush the reservoir twice & clean the filter screen; the fluid level should be between the MIN/MAX marks on the dipstick].

Last edited by bluebee; 08-06-2011 at 01:57 PM.
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