i have a bmw e36 325is (m3 swap from 98), i just had a small leak fixed on my transmission, and had a new hanger bearing installed aswell (completely shredded). From a cold start, in all the gears i heard a whistling noise coming from my transmission, but when i clutch in, the noise stops. it seems to occur when under load. When my car is fully warmed up the noise stops. i did some research and no solid explanations. before i got everything fixed it never had made that noise.
has anyone had this problem?