[Magran1]

Have a 2014 Ecodiesel Summit.. tired of paying retail price for DEF at Local Jiffyy Lube. Any suggestions on what type of DEF I should purchase to put in myself and from where? Much appreciated!!

 

[Brewster]

I've used Valvoline Premium Blue DEF without issues. NAPA usually has it stocked. I would watch buying it on-line since they might send you old stuff.

 

[Kst8er]

The last 2 times I went to local truck stop & filled up at their pump. IIRC, $2.79/gal. I don't remember which, but pilot or flying j posts prices online. The pumps tend to be a little messy, but I get the exact amount needed for cheaper than buying jugs & easier fill tank.

 

[hrider]

The last 2 times I went to local truck stop & filled up at their pump. IIRC, $2.79/gal. I don't remember which, but pilot or flying j posts prices online. The pumps tend to be a little messy, but I get the exact amount needed for cheaper than buying jugs & easier fill tank.

Agreed....truck stops are by far the cheapest and probably the "freshest" DEF out there. This is all I have ever used...plus you get some pretty strange looks from the truckers when you are putting DEF in a vehicle that nobody realizes is a Diesel.

 

[KobeSauce]

I recently paid Jeep a bit over $52.00 (outrageous) to top off the DEF tank with approximately 4 gallons during a normal service. If your Summit is in warranty, I would be cautious, whereas some dealers may try to invalidate a warranty claim of some sort if not using genuine Mopar DEF. If warranty is not an issue, I would try to find fresh DEF that closely replicates the Mopar brand. Perhaps a chemist can chime in with a professional opinion. I believe that DEF is primarily water with ???! Good luck...

 

[ORGCherokee]

DEF is around 1/3 Urea (not the same as peeing in it lol) and 2/3 water (de-ionized). I used to work at NAPA, and you can find all sorts of brands. The fresheness is not really an issue, however the price can be. You can usually find DEF on sale, and in 2.5 gallon containers with spouts for a clean fill up. I tend to go with Blue DEF made by Peak just because it is prevalent in my area.

 

[Melbehar]

I'm not sure if it is the same in every other state because I never need def there but Walmart is like $10 for a 2.5 gal jug of def

 

[CaseyGV]

I've only ever used the Mopar DEF. Never had any problems with it.

 

[Kst8er]

I recently paid Jeep a bit over $52.00 (outrageous) to top off the DEF tank with approximately 4 gallons during a normal service. If your Summit is in warranty, I would be cautious, whereas some dealers may try to invalidate a warranty claim of some sort if not using genuine Mopar DEF. If warranty is not an issue, I would try to find fresh DEF that closely replicates the Mopar brand. Perhaps a chemist can chime in with a professional opinion. I believe that DEF is primarily water with ???! Good luck...

That 4 gallons should have cost you ~$12. DEF is DEF, there is only one standard for the stuff. Mopar doesn't gold plate it. If it's bad, I keep my receipts & can go after the station.

 

[Casper2]

Walmart has 2 1/2 gal Peak Blue for under 13.00.

 

[Patriot4971]

I buy at Advance Auto usually on sale for buy 1 get 1 at 50% off.

 

[racer-x]

40k on my '14, live in Maryland (gets nice and cold) and have only ever filled up at Flying J DEF pumps. Runs me about $17 a year - this year was $17.70. Only need to fill it one time per year. Never had a trouble light, never had a freeze problem, never had a hiccup.

Hint: time your fillups so you get DEF in hot weather, otherwise it takes forever to get that stuff to flow in the cold!

 

[CaseyGV]

I had been using Mopar DEF exclusively in my 2014 GC, but this weekend, I went to one of the truck stops in town and filled it from the DEF pump. If I have no problems, that's the way I'll go - it was only $2.799/gallon. The trucker who was filling his rig walked by as I was putting the DEF in and was very complimentary about my Jeep

As you might expect, the pump is calibrated for a semi, so you can't squeeze the trigger too hard, but it was no problem otherwise.