Welcome to Randolph Automotive! For more than 50 years, we have delivered expert, dependable repair and maintenance services for automobiles and light trucks to customers in Randolph and surrounding communities – along with Mobil branded fuel, a fully-stocked convenience store, and Dunkin Donuts all in one location. Welcome to Randolph Automotive! For more than 50 years, we have delivered expert, dependable repair and maintenance services for automobiles and light trucks to customers in Randolph and surrounding communities – along with Mobil branded fuel, a fully-stocked convenience store, and Dunkin Donuts all in one location.