Question 1

What Is It Made Of?

Accepted Answer

Fairy Tears, Tree Sap, Frog Saliva and Mosquito Urine.

Question 2

Sorry, still confused.  Am I getting 2.5 gallons or 5 gallons?

Accepted Answer

5 Gallons. It is 2 bottles, each bottle is 2.5 gallons each.

Question 3

Your description says a two pack. That means two 2.5 gallon containers. I see your reviews say false adverstisment, so which is it? One or two pack?

Accepted Answer

I don’t recall saying anything about false advertisement. I received 2 containers of DEF that were 2 1/2 gallons each. A total of 5 gallons.

Question 4

Will this work in a 2014 Grand Cherokee diesel without setting off the "Improper DEF" warning?  This product is much cheaper than buying the MOPAR version.  Thank you.

Accepted Answer

1. the Peak Blue Def is what I use in my 2016 Ram 1500 ecodiesel, DO NOT buy it online, you can buy it cheaper on the street... Farm and Ranch stores is much cheaper as in 8 or $9 a 2.5 gal jug... your def tank if it's on a truck should be about 10gal, to answer your question, when can you add it, you can do it at anytime... when your def tank is about 1/2 full or empty, just pour in about 2 jugs, which equals 5 gals... but, that second jug, add slowly especially when you get towards the last 1/4 of the jug, otherwise, the overfill splash gets kind of messy, and def, it'll crystalize on all other surfaces... so keep it in the jug or in the def tank...   another note of interest, someone on this thread mentioned that you can pick up def fluid at some truck stops... I have heard pro's and cons about that... the pro's, if they are charging 2.40 a gal that's cheap, but, those truck stop def fluid fills do not tell you what the specification their fluid meets... so, attain the approved specs from your owners manual, the Peak blue def product meets mopar spec standards....

ASIN	B07CB25KWM
Best Sellers Rank	#101,451 in Automotive ( See Top 100 in Automotive ) #362 in Oil & Fluid Additives
Brand	Blue Def
Customer Reviews	4.6 4.6 out of 5 stars (1,521)
Date First Available	11 July 2025
Item Weight	10.4 Kilograms
Item model number	DEF002-2PK
Manufacturer	Blue Def
Manufacturer Part Number	DEF002-2PK
Product Dimensions	50.8 x 25.4 x 25.4 cm; 10.43 kg

Blue Def DEF002-2PK Diesel Exhaust Fluid, 2.5 gallon, 2 Pack

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