Super Tech DEF Diesel Exhaust Fluid, 2.5 gal

I've been using this fluid in my 2015 Ford f750 diesel for the past 10 years and have saved a bundle over the name brands. Read the instructions on how to care for the product. Don't leave it in hot places. I've never had a single issue with my DEF equipment failing prematurely while using this product.

Have been using this DEF for just over 4 years now and without any problems, as I see it why pay more for the blue stuff being that all DEF has to meet the same EPA standards for purity. The one thing you need to be sure of no matter what brand you buy is to look at the date code to be sure its not more than 3-4 months from date of manufacture as DEF is normally only good for 12 month from date of manufacture, you also do not want to buy DEF that has been sitting in the sun as heat and sun shorten DEF shelf life.

I use this DEF regularly for my diesel truck, and it works exactly as it should. It's compatible with diesel engines that use SCR systems and helps reduce emissions while keeping everything running smoothly. The quality is consistent, and I haven't had any issues using it. It pours easily and does what it's designed to do without any complications. We keep this on a subscribe-and-save order because the price is great and it's convenient to always have it on hand. Overall, a reliable product at a great value — definitely recommend for any diesel vehicle that requires DEF.

Used this Super Tech DEF 2.5 Gallon in my 2022 Freightliner Cascadia for over 125,000 miles with zero performance issues. It meets all OEM requirements. My only concern is the foil seal under the cap; small particles can occasionally drop into the tank opening when pouring. Just be careful when opening to prevent potential contamination. Overall, it's a reliable, cost-effective alternative to name brands. Highly recommended for the performance.

A great deal delivered to my door! A little extra work "pouring it in" compared to pumping it, but it's a cleaner mixture compared to whatever is in the tanks at the fuel stops.

This leaked through a sealed top in the back of my vehicle. It was only knocked over for a moment, how they stacked it when loading it, and I am still working with cleaning it out of my car, thank goodness for rubber mats. However it still got into the fibers of my car.

Ordered 4 boxes, one box was leaking. The delivery was not great, left message for delivery that we are a business open 8-4 m-f, they attempted delivery twice at 6:30 pm. On the third attempt at 6:30 pm they left the product by the door which was fine.

The product received was a substitute for the product intended to buy. Not even a receipt received with the correct product code at the curbside pickup which made almost impossible to return to the store. The customer service staff at my local store by the name Citalia was very rude and did not listen to my explanation. Only the store manager, Blanca, showed interest to listen to me and processed the refund. This experience showed me communication issues between walmart.com and local Walmart stores. Beginning with the process of exchanging products ordered online without providing a corresponding receipt for the items delivered at curbside to the customer. And customer support from Citalia that should go back to stocking shelves and leave the customer service desk to people with customer service skills. Shame on Walmart.com.

All packages were leaking. Plastic bag had DEF fluid all inside. Leaking in driveway. Cardboard surrounding container soaked in DEF. Then Walmart wouldn't even refund the purchase. Absolutely ridiculous.

I used Super Tech DEF for Diesel Fuel Vehicles with SCR for about 3 months in my 2020 GMC Sierra Duramax, and it ended up damaging my emissions system. I started getting DEF/SCR warnings, reduced power messages, and emissions-related faults that I never had before. Yes, it's cheaper than other DEF brands—but that savings is an illusion. The repair costs and diagnostic work I'm now dealing with are far more expensive than anything I saved. If you care about your diesel truck and want to avoid costly SCR or emissions issues, stay away from this product. Spend a little more on a reputable DEF brand upfront, or you'll pay much more later. I definitely regret using this.