Go left at the bottom of the hill in the town with the yellow and green guard poles. Then, right at the next Y to take you through Licey and on to Santiago.
There is only one spot on the mountain where the road drops off. Be careful, there is little warning.
So if you turn right at the Texaco station instead of left (which is the way we usually go but I am wondering if there is a quicker way) will that take you in to Santiago by way of Tamboril and turn into 27 of Febrero?
I am not sure about where you say to turn, but I can tell you for sure if you go left towards Moca when you see a Texaco station on your left you will come to a spot where you can go left to Moca or right will take you to Santiago and put you right in the middle of town on Duarte. You will pass the International Mall on your left in about a half hour or less.
We may be talking about the same route.