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      02-08-2017, 01:19 PM   #4
gfisher99
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Drives: '11 E92 M3, '18 M2, '22 X3M
Join Date: Feb 2016
Location: Austin, TX

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Quote:
Originally Posted by bgalex View Post
He did also change the fluid in the diff. He said he was using Castrol but then after a day he told me he put the OEM BMW with FM booster.. Im wondering the fluid wasn't good and it started just now making noise? Is that possible?
Mine did this for about 1000 miles after the diff fluid was changed to the BMW stuff with FM booster. It went away mostly after that. I get it every now and then when its still warming up.
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