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Old 06-21-2010, 01:04 AM
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bluebee bluebee is offline
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Location: San Jose, California
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Mein Auto: 02 BMW 525i M54 auto 130K
Originally Posted by edjack View Post
Slightly less than 2 quarts.
OK. I put "just under 2 quarts" in the tribal knowledge fluids summary (but how did you know?).

Is there a chart somewhere?

BTW, this 4-page BMW AG TIS on the power steering is invaluable as to which fluids are certified by BMW.

Here's an interesting excerpt from this web page:
Prior to the advent of BMW Free Scheduled Maintenance, approximate BMW maintenance recommendations were: automatic transmission fluid (ATF) and filter changes every 15,000 miles, manual gearbox and differential oil changes every 30,000 miles, annual brake fluid changes, and coolant changes every two years. Spark plugs, air filter, and fuel filters were typically replaced every 30,000 miles on most BMWs (this is a tune-up) except M cars up to 1995, which got new spark plugs and a valve adjustment every 15,000. Later advances in computer engine management and spark plug technology legitimately allow 60,000-mile spark plug life if not more.
But once BMW began paying for scheduled maintenance, lo and behold the "schedule" was revised. Now the cars hardly need any maintenance at all. The 1,200-mile break-in service was done away with except for M cars. Engine oil suddenly lasts 15,000 miles (dealers are supposed to use BMW synthetic oil). Manual gearbox and differential oil? No worries there now BMW says they NEVER need to be changed; it's "lifetime fill." Brake fluid and coolant service intervals were doubled with no change in the original BMW brake fluid and anti-freeze dealers are supposed to use.
Power Steering Fluid:
Replace every 30,000 miles. This is a very neglected operating fluid. Almost all BMWs use automatic transmission fluid in the power steering system, except for some E32 7 Series cars, which use Pentosin hydraulic oil. Nothing will balls up the works faster than using one when you should be using the other. Check the sticker on the reservoir, check the owner's manual, and if you are still confused, take the car to a pro or e-mail me. It is not necessary to evacuate the entire power steering system. I just open a line down by the pump.
I have had great experience using Red Line Synthetic Power Steering Fluid 184,000 miles and counting on the original rack and pinion unit and pump on the vehicle I used to test this product. But I would not use it in place of Pentosin hydraulic oil where that product is specified.
Attached Files
File Type: pdf BMW Pwr Steering ATF Fluid Type-List.pdf (303.3 KB, 3527 views)

Last edited by bluebee; 08-05-2010 at 04:07 PM.
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