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Customer reviews for BlueDEF Diesel Exhaust Fluid (2.5 gal.) for
BlueDEF Diesel Exhaust Fluid (2.5 gal.)
4.8 out of 5 stars
stars
1,258 ratings494 reviews
  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 421-430 of 494 reviews
Sep 11, 2025
Carlos
5 out of 5 stars review

Good Prices, good product. Easy to pour.

Review from walmart.com
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Jul 12, 2022
davidwanda
5 out of 5 stars review

Verified Purchase

Best proces

Good price, good service

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Aug 28, 2024
Kevin
1 out of 5 stars review

HARRASSING EMAILS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

STOP HARRASSING ME WITH EMAILS, I DON'T CARE TO LEAVE A REVIEW ON EVERYTHING I PURCASE FROM YOUR STORE. I DON'T HAVE A ACCOUNT THAT I USE WHEN I BUY THINGS. SO HOW ARE YOU ABLE TO KNOW WHAT I BUY???? STOP TRACKING MY CARD NUMBER!!!!!!!!

Review from walmart.com
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Mar 26, 2024
James
3 out of 5 stars review

Is the cost worth it?

This a good product as far as I can tell but who knows if it’s good or not since it takes years of use to know if it’s good or bad for your vehicle. I think it’s too expensive and would prefer the Walmart brand.

Review from walmart.com
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May 28, 2019
WalmartCustomer
1 out of 5 stars review

Bad fluid

This is the 2 nd time my def system on a f250 went out due to this fluid ,if the fluid is stored in a hot area or exposed to the sun it will mess up sensor on your diesel

Review from walmart.com
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Jan 20, 2024
stephen
3 out of 5 stars review

Hope this helps

It’s urea and water, I doubt it does anything for the environment and it’s overpriced. I only buy it when the cheap Walmart pee pee water isn’t available. If my truck didn’t shut down without it I wouldn’t waste my time with it

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Jul 31, 2011
stinky
5 out of 5 stars review

UREA for new diesel engines

Volkswagen Passat diesel, Ford Truck diesels & Mercedes diesels now require this fluid in a separate tank to clean the exhaust. Way cheaper than the dealers & easier than going to a truck stop. Engine mixes it automatically, cleans up exhaust.

Review from walmart.com
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Nov 20, 2023
Anonymous
4 out of 5 stars review

For newer diesel trucks

This product does what it says it does for newer diesel trucks that require DEF. Easy to find at Walmart. Wish it was a tad cheaper as you don't get an option whether or not to use DEF.

Review from walmart.com
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Sep 2, 2017
ArkansasTraveler
5 out of 5 stars review

Diesel Exhaust Fluid

The freshness. If DEF is important to me. I've been using DEF since 2010 in my trucks. I buy the best products at the best price I can find. Usually, I get mine at Sam's Club.

Review from walmart.com
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Apr 3, 2020
John
1 out of 5 stars review

Bad experience

Be careful of the date on the box. I was out of town and needed some for the return trip and about half way home i went into limp mode, 4 mph, and now have to clean out the DEF tank. When I got home I looked at the box and it was 2 years old.

Review from walmart.com
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