I'm a first time diesel owner (2015 F250). I'm at 3500 miles and my readout says that I'm at half level in my DEF tank. So I'm wondering what any of you might know about DEF products. For discussion purposes, I'm looking at two products that I can by at Walmart, BluDef at $26 for 2.5 gals and SuperTech DEF at $8 for 2.5 gals. Both are certified by the American Petroleum Institute and both are OEM approved on all SCR-equipped engines. Do any of you know why it is better to buy the BluDef at three times the cost over the SuperTech? Thanks in advance for any info you can share!

 

I have used the Wal Mart DEF with no problems. It is all I used on a trip from Alabama to Michigan to Seattle, WA to Denver, Co and back to Alabama last August. Never encountered any problems. Can't beat the price.

 

It's all the same stuff. No reason to pay more for "name brands". Check your Ford dealer, too. I buy it there sometimes and the prices are pretty competitive.

 

Yea use whatever, all the same

 

Use whatever is the cheapest. It's strange that the BlueDef is so much more at your Walmart. Here at ours, the SuperTech is 12.97 for 2.5g and the BlueDef is 11.97 for 2.5g. So I've just been getting the BlueDef if I know I'm not going to be anywhere near a truck stop that has a DEF pump.

 

I would hope soon some of the bigger gas stations would install def tanks, would be nice

 

Lot of truck stops (Flying-J, Pilot, Love's, TA) have bulk DEF. Gotta be carefull because DEF is Uric Acid (urea/urine) and will damage the internals of the fuel system. It's all the same whatever brand like they have said. I buy whoever said cheapest just like we do in the power plants and refineries I work in.

 

I always just get the ford stuff at my dealer simply because it's close and the price is about comparable to others. That way just incase ford can't say anything

 

X2. Buy at the high volume places. Just put it into the blue hole, and not the the green hole.

 

Urea is an 11% solution of straight ammonia and distilled water.

Only catch is that it is highly purified.

Any residual chemical / mineral contaminants will affect component life, and you have no way of determining if a home brew meets the required purity standards.

Grocery store sourced ammonia isn't pure enough to meet the specs.

There are only a handful of major producers of automotive grade urea. Those major suppliers also provide the private labels, to the same purity standard as the product marketed under the major labels.