ACDelco GM Original Equipment 10-4022 Diesel Exhaust Emissions Reduction (DEF) Fluid - 1 gal, white

As advertised. Plus, in packs of three includes a new discharge house.

Using DEF means being fussy about the quality to minimize problems on the road. This product has been consistently a good performer over the years.

Local dealer was out so I picked some of this up from Amazon. Shipped quickly and came with an easy pour spout. First Diesel GM vehicle so I'm using this fluid as recommended.

I bought these because of the name brand and the smaller containers. Just a girl who loves her diesel truck, but I can’t lift the big jugs they normally sell in the store. I like to keep extra in my truck and these are easier to store and move around. Yes, they are more expensive but worth it for me. I was a little worried about the fact that there was no seal under the cap and this stuff looks like water but I bought a refractometer specifically for DEF and they test spot on at 32.5%.

Whats to say, it original equipment and can't go wrong. Pay more from a dealer.

Tired of picking up and pooring a 2.5 gallon of DEF. Then this is the answer. Lighter in weight and easier to pour. Also easy to carry one in truck in case of need.

This may be a fine product, but like other products that have a shelf life, the expiration date should be legibly present. The date code on this container is completely illegible. There is no way to tell how old it is if one can't read it. Half of each number/letter isn't even there. I even tried making out the code with a magnifying glass. No luck. It's not worth costly DEF repairs putting old expired fluid in. I bought a gallon of PEAK in the same order just in case something like this happened. The PEAK container has a clear date code and it was this years (2020).

This is the only approved DEF for my Chevy vehicle. I've purchased two of these so far, the second one I received did not come with the hose adapter nozzle. As a result, it stayed in my trunk for several weeks; at some point it exploded and ruined some clothes and left crystallized chunks of the fluid everywhere. Don't store it in your trunk! I eventually went to a dealership and bought another one, that come came with the nozzle. One gallon of this gets me about 300 miles in my vehicle, which seems low but that's what the computer says. It looks like the standard five gallon version is only available at dealerships and auto supply.