Hi Damian: It is very common that when they tighten the axle nut of the homokinetic, as the mechanic is a fat man and he turns on the key plus the spout, it is so tight that they make you perch the wheel of the wheel, and / or , so that it is not going to be lacking, they put so much grease on it that they fill the vacuum of the bolillero at 100%, which causes the fat to be heated by hydrodynamic force until it reaches the melting point I burned, in both cases it is a mechanical disaster and a total lack of knowledge of mechanics, What to do ?, Easy: lift the car with the jack, loosen the nut a couple of turns, (without moving the wheel), tighten it again, loosen it again and then, with your hand, (without the key), close the nut tightly, lock the nut, you will see that with use it stops heating. Just like this, very soon you will have to change the wheel again