Lincoln MKZ engine is very noisy. Can you reduce noise by maintaining and replacing better oil?

You'd better check it and see what the problem is. There are many cases where the engine noise becomes louder, not only the engine oil, but also the ignition, air intake, throttle and even a screw. For example, I used to use engine oil, because the engine oil was not good, the lubrication protection ability was not enough, and the engine noise was loud. Now it is replaced by GT Maroon 5, and liquid molybdenum is added, which has a good anti-wear protection ability for the engine and the car is much smoother than before.