I got a TSB fluid change and it quieted down... Of course ambient temperatures started to rise at the same time. I'm happy that the noise is gone.
Dave Flogaus CCA #123862
Instructor, BMW Club Racer & Nürburgring Specialist
95 E34 M5 3.8 Daytona Violet
98 E36 M3/4 White IS #244
14 F31 M Sport Touring, 13 E70 X5d