How different is cold start-up flow/protection in a 10w-30 versus a 15w-40, versus a 20w-50?
Assume we're starting above freezing (vast majority of the time). Does the 10w circulate faster such that it reduces wear on start-up over the other two?
Assume we're starting above freezing (vast majority of the time). Does the 10w circulate faster such that it reduces wear on start-up over the other two?