[kwaku415]

My brother has a 2014 535ix and took it to the shop to get the front right axle replaced because I found out the CV Boot was torn after seeing the axle shaft seal in the driveway. I made him stop driving after seeing the shaft seal in the driveway. I bought the axle off FCP Euro with the bolt and axle shaft seal. I know 100% that the axle shaft fits. I got in a car accident recently and I can't work on it myself. The mechanic replaced it but used the old bolt and didn't install the new axle seal. Not my car so not sure how much he drove or how hard, but I drove it the next day or 2 and it was making a lot of noise take it back to find out the axle snapped. Just trying to see if anyone would know why and if it was the driver's fault or the mechanics. Wouldn't the differential leak when the axle seal is off causing it to lock up?