Advance Auto Parts at 393 Cambridge St in Allston offers a wide range of automotive aftermarket products and free in-store services. They carry leading brands like FRAM, Carquest, and DieHard, and provide free battery testing, installation, engine code scanning, and recycling. Customers can save money by signing up for the Speed Perks loyalty program, which earns points towards discounts on store items and gas. The staff at this location are praised for their exceptional customer service. Reviewers highlight the knowledgeable and helpful employees, such as Anthony, the manager, who thoroughly examined their car issues and provided the appropriate solutions. The sales clerks are described as kind, efficient, and willing to go the extra mile, even offering to install wiper blades for a customer. Overall, customers are highly satisfied with the service they receive at this Advance Auto Parts store and recommend it to their friends.