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After a spirited two hour drive, I entered a small town and slowed for several lights. Suddenly, I heard a loud grinding noise up front and could feel it in the steering wheel. Pulling over, I checked the power steering level and found the reservoir to be full of soapy bubbles. I waited for these to subside and then checked the fluid level. It seemed OK, but the fluid was a coppery/muddy color. So I waited half an hour and checked again. This time I added fluid, but not a lot. Starting the car, all seemed OK, so I carefully started home. Two hours later, I'm home with no more problems! What happened??
I had a similar experience recently the day after a long drive, so I checked for a leak -- finding none, I took it in to a reliable shop and they found no leak, either. Could it be that the car leaks only when driven hard? Plus if the fluid boiled (the soapy bubbles??) is it ruined and in need of replacement??
Any thoughts, ideas etc. most appreciated.
Dave M
'88 M6
'95 525