Synthetic In High Mile Engine?

This may be a stupid question, but would it be safe to put Mobil 1 15w-50 synthetic in my 82,000 mile 318 with a Comp 260 cam that has 2,000 miles since installation? The only oil leak i have is a few small dribbles from the rear main immediately after it ran for a while, but thats it and it stops too. Thanks.