Thanks Bimmerfan. Good points.
I was going to try glueing the seals shut as described on the 7 series board. That would be first step before getting more extreme.
So far i just top off with steering fluid, maybe once a year. I just expect it to get worse at some point. The car was built in 2007.

Appreciate the reminder.

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Styling: M5 body kit, M5 trunk spoiler, LED Angel Eyes, HID fogs, LED side markers, Jehnert Flatline speakers, Mobridge M1000 DA2 prepro, Zapco Z8 DSP, Zapco Z-150.6 amp, iDock on dash
Performance: JB4/G5 ISO flashed on Cobb, Meth Injection, AR Downpipes, ER FMIC and Charge Pipe, DCI, Walbro LPFP, RB turbos. H&R Sport springs/Koni FSD shocks.