Yes, Costco gas stations do offer diesel fuel at select locations. However, it's important to note that not all Costco gas stations sell diesel fuel. You will need to check with your local Costco gas station or visit the official Costco website to determine whether the specific location you plan to visit offers diesel fuel.
Costco's diesel fuel, known as Kirkland Signature Diesel, has been certified to meet TOP TIER™ performance standards, ensuring optimal engine performance and efficiency where it is available.
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