Costco Gas Station is a membership-based fuel center that offers Top Tier rated Kirkland Signature™ Gasoline. The gasoline is formulated to clean your engine and help your vehicle run like new. Costco is known for providing high-quality products at the best possible prices, and their fuel is no exception. While some customers have reported concerns about the quality of the fuel, most find it to be on par with other gas stations. The prices at Costco Gas Station are consistently the most affordable in the area, though this often means longer wait times, especially during peak hours. Despite the potential for long lines, the staff is always friendly and helpful. Customers with a Costco-based credit card can also enjoy an extra percentage back, making the wait even more worthwhile. Overall, Costco Gas Station provides a reliable and cost-effective fueling option for its members.