Greetings to all, he decides to replace the fluids and came across the fact that in addition to the oil, you need to add an additive to the differential, it is called Motorcraft Additive Friction Modifier XL-3 0.118l. The question was, does my MKZ 2017 awd 2.0 reserve limites slip differential , because the additive is designed for this type of differential, can I add it to get rid of noise?