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DEF fluid

Mayor30
Explorer
Explorer
Is all DEF fluid the same? I usually buy the Blue DEF but it's now about $20. Our local hardware store has the Blue DEF and another one that is $12.99. I did buy the Blue DEF but just wondered if the cheaper one would be ok.
27 REPLIES 27

klutchdust
Explorer II
Explorer II
Grit dog wrote:
Michelle.S wrote:
Or buy the Walmart Brand for $9 to $12 for 2 1/2 Gal. Been using it since 2005 in three different trucks and no issues.


2005? Mmmmkay


Yeah. My 06 Duramax is not a DEF vehicle.

haddy1
Explorer
Explorer
My local Walmarts are often out of their brand. Found it a Menards for about the same price. No issues so far.
2019 Tiffin Phaeton 37BH
2018 Grand Cherokee Toad

sayoung
Explorer
Explorer
Tractor Supply brand is usually what I get. No local def pumps.

Michelle_S
Explorer II
Explorer II
Grit dog wrote:
Michelle.S wrote:
Or buy the Walmart Brand for $9 to $12 for 2 1/2 Gal. Been using it since 2005 in three different trucks and no issues.


2005? Mmmmkay


Yep my boo boo, have had a Diesel since 2005, but didn't need DEF until I upgraded to a 2011. Brain Fart.
2018 Chevy 3500HD High Country Crew Cab DRW, D/A, 2016 Redwood 39MB, Dual AC, Fireplace, Sleep #Bed, Auto Sat Dish, Stack Washer/Dryer, Auto Level Sys, Disk Brakes, Onan Gen, 17.5" "H" tires, MORryde Pin & IS, Comfort Ride, Dual Awnings, Full Body Paint

Vintage465
Nomad
Nomad
Tractor Supply and Walmart seem to have the best prices, even for name brands
V-465
2013 GMC 2500HD Duramax Denali. 2015 CreekSide 20fq w/450 watts solar and 465 amp/hour of batteries. Retired and living the dream!

Thermoguy
Explorer II
Explorer II
Grit dog wrote:
Michelle.S wrote:
Or buy the Walmart Brand for $9 to $12 for 2 1/2 Gal. Been using it since 2005 in three different trucks and no issues.


2005? Mmmmkay


I'm guessing he means 2015...

Thermoguy
Explorer II
Explorer II
Some stores offer a premium DEF - Platinum I think... You don't need that. Just buy the regular Blue DEF. Last time I had to look around for the cheaper stuff.

Grit_dog
Nomad III
Nomad III
Michelle.S wrote:
Or buy the Walmart Brand for $9 to $12 for 2 1/2 Gal. Been using it since 2005 in three different trucks and no issues.


2005? Mmmmkay
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold

ppine
Explorer II
Explorer II
Very simple formula. No perceived difference between suppliers of DEF.

Bionic_Man
Explorer
Explorer
DEF is DEF. I don't spend more for the Blue. I either get it from Walmart, or from the pumps at a truck stop (I like Maverick).

If you buy it at Walmart (or anywhere) I'd look for the expiration label. From what I have read, expired DEF won't hurt your engine, but you will use more.
2012 RAM 3500 Laramie Longhorn DRW CC 4x4 Max Tow, Cummins HO, 60 gallon RDS aux fuel tank, Reese 18k Elite hitch
2003 Dodge Ram 3500 QC SB 4x4 Cummins HO NV5600 with Smarty JR, Jacobs EB (sold)
2002 Gulf Stream Sea Hawk 29FRB with Honda EV6010

ktmrfs
Explorer
Explorer
DEF is regulated to be a specific formulation so they are basically all the same.

Recently Costco had blue def for $12 for 2.5 gallons. I just buy from places that likely have decent turnover of the fluid so it hasn't been sitting on a shelf for months and months.
2011 Keystone Outback 295RE
2004 14' bikehauler with full living quarters
2015.5 Denali 4x4 CC/SB Duramax/Allison
2004.5 Silverado 4x4 CC/SB Duramax/Allison passed on to our Son!

Michelle_S
Explorer II
Explorer II
Or buy the Walmart Brand for $9 to $12 for 2 1/2 Gal. Been using it since 2005 in three different trucks and no issues.
2018 Chevy 3500HD High Country Crew Cab DRW, D/A, 2016 Redwood 39MB, Dual AC, Fireplace, Sleep #Bed, Auto Sat Dish, Stack Washer/Dryer, Auto Level Sys, Disk Brakes, Onan Gen, 17.5" "H" tires, MORryde Pin & IS, Comfort Ride, Dual Awnings, Full Body Paint

KD4UPL
Explorer
Explorer
It's cheaper to buy it from a pump at a fuel facility. I get mine from the pump at Quarles for around $4 something a gallon.