Costco Gas Station offers a membership-based fuel service, providing Top Tier rated gasoline under the Kirkland Signature™ brand. Customers praise the consistently low prices and high-quality products. The staff at this location, including Matt, KC, Joey, and Fran, are described as amazing and attentive, with a special mention for Sergio, who is known for his helpfulness and excellent customer service. The gas station is praised for its cleanliness, organization, and safety, making it an essential stop for Costco shoppers. Despite having only two fuel varieties, customers find the selection to be sufficient for their needs, and the long hoses allow for easy access to the fuel pumps regardless of the car's gas tank location.