Greulich's performed a synthetic oil change, tire rotation & 26-pt. inspection . Based on inspection, they recommended an air filter replacement, which I agreed to. They found that my AAA battery was in a condition that needed replacement, after only two years & suggested I take it to AAA repair shop, which I also did after leaving the shop. AAA confirmed the need for a new battery which was replaced under warranty. I have been using Greulich's for several years and have had only good results. Prices are reasonable. An efficient operation.