BlueDEF

BlueDEF Diesel Exhaust Fluid (2.5 gal.)

|1,258 ratings
Item # 531500
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Columbus, 43215
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Highlights

  • Non-toxic; non-flammable; non-polluting
  • For diesel SCR engines
  • New nozzle makes pouring easy
Techron Diesel Fuel System Cleaner 6/20oz bottles
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5 out of 5 Stars. 1 reviews
BlueDEF Diesel Exhaust Fluid (2.5 gal.)
BlueDEF Diesel Exhaust Fluid (2.5 gal.)
Hero image 0 of BlueDEF Diesel Exhaust Fluid (2.5 gal.), 0 of 5

About this item

Product details

Driving to a cleaner environment. Peak BlueDEF is a quality product made from High Purity Synthetic Automotive Grade Urea and Deionized Water. BlueDEF is stable, colorless, non-flammable and non-toxic. It's classified as minimum risk for transportation. BlueDEF conforms to the ISO-22241-1 specification for DEF, is API registered and meets or exceeds OEM specifications.

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Member ratings & reviews

4.8 out of 5 stars
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1,258 ratings494 reviews
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  1. 5 stars89% (1,123)
  2. 4 stars6% (73)
  3. 3 stars2% (20)
  4. 2 stars1% (7)
  5. 1 star3% (35)
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Showing 1-3 of 494 reviews

Jun 1, 2026
BF
5 out of 5 stars review

Verified Purchase

Good product at a great price

Good product at a great price. The pour spout consistently works well and it's stored in a cool area instead of on a sidewalk out in the sun or in the garden department.

Helpful?1JBVD4G0ZA077480403211
Feb 16, 2026
Henry
5 out of 5 stars review

Verified Purchase

the blue Def works great Walmart carries it and it is about the cheapest place if I have to buy it in any other store it is double the price and if I cannot find the blue DEF I am forced to use no name brands and I have nothing but problems check engine light comes on I will get a 75 mi to 15 mile an hour see dealer immediately as soon as I put the blue d e f back in all my problems go away.

Review from walmart.com
Helpful?1JBVD4G0ZA077480403211
Jun 24, 2026
Kym
5 out of 5 stars review

Verified Purchase

Will only use the name brand DEF fluid because the cheaper ones cause our truck to go into limp mode

Review from walmart.com
Helpful?1JBVD4G0ZA077480403211

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