Shell is a gas station that offers a convenient smog check service, run by a friendly and knowledgeable operator named Gary. Many customers have praised Gary's excellent service, describing him as professional, efficient, and focused on providing helpful advice about car maintenance. While the gas prices are on the higher side, the smog check service is reasonably priced. Customers appreciate Gary's quick turnaround and his willingness to answer questions and provide recommendations, such as using higher-octane fuel and getting the engine steam cleaned. However, the car wash at the Shell station has received some negative feedback, with customers noting that water stains often remain on the car, possibly due to the use of recycled water. Overall, Shell's smog check service, led by the attentive and informative Gary, has earned positive reviews from satisfied customers who value the convenience and quality of the service.