Synthetic oil is more slippery with less friction than dino oil. A little more noise is a common complaint BUT no reports of engine failures due to using it. Less friction and more slippery = a little more noise, JMHO.
I'ts common with syn oil and don't know if any 1 is less noisy then the other.
I'ts common with syn oil and don't know if any 1 is less noisy then the other.