Sinclair, a gas station located in Fullerton, offers customers a mix of positive and negative experiences. While the gas prices are consistently low, the customer service can be hit or miss, with some employees described as rude and "trashy." The station is praised for its premium gas quality, which is said to perform better in customers' vehicles. However, concerns have been raised about the lack of safety seals on the filling station panels, which could potentially lead to tampering issues. Cleanliness is another area that needs improvement, as the station is often described as dirty and with overflowing trash. Despite these drawbacks, Sinclair is generally well-liked by customers, who appreciate the friendly staff and the feeling of safety when visiting the station, especially during early morning hours. Overall, Sinclair provides affordable gas and a generally positive customer experience, but could benefit from improvements in customer service and station maintenance.