Costco DEF Fluid, Blue DEF Diesel Exhaust Fluid


I was very surprised to see that Costco carries Diesel Exhaust Fluid. I was browsing through Costco Business the other day, when I came across this Costco DEF fluid. You can’t beat the price at only $9.39 for 2.5 gallons. Every other big box store (Target, Walmart, O’Reilly’s, etc.) carries this for $12 – $15 for the jug, but Costco has it for under $10. As the regulations get stricter (especially in California), this is going to be required more & more. I don’t know all the specifics, but I do know we use this stuff all the time at work now. Any heavy duty diesel vehicle that we operate, now requires DEF fluid. Costco Business also sells it online for $12.59 delivered, but I wanted to show you it’s over 25% cheaper if you have a Costco business nearby. They may even start carrying it at the regular Costco, so keep your eye out. Anyways, here are a few more details about this Costco DEF fluid

  • 2.5 Gallon Jug
  • Approved for use in all Diesel SCR Systems
  • API (American Petroleum Institute) Certified
  • DEF ISO 22241
  • Store between 23 & 86 degrees Fahrenheit
  • 67.5% Water, 32.5% Urea

Costco DEF Fluid


This product is made by the company BlueDEF. It is one of the most popular Diesel Exhaust Fluid brands in America. What’s nice is that Costco also sells their own Motor Oil now, so they can be you’re one stop shop for basic maintenance. Who knows, maybe they’ll start making their own Kirkland Signature Brand DEF & sell it for cheaper (like they do with a lot of products). If you can’t find this stuff locally, make sure to check out these links below. If you’re looking for a LARGE supply of Diesel Exhaust Fluid, make sure to check out the 330 Gallon Tote below……..

Price: $9.39, Item Number: 1111266

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