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Old 12-23-2019, 10:47 PM   #61
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Originally Posted by LittleBill View Post
I have the same on my 2015 2500HD Chevy Duramax.



Here is a release about the DEF fill and its gauge on the new 2020's Chevy's - "Diesel DEF tank/filler enhancements. The Diesel Exhaust Fluid tank is relocated farther back on the Silverado HD’s frame and out of sight from the exterior, and the inlet is located next to the fuel filler for more convenient filling. An electronic gauge readout for the DEF fluid level is added to the Driver Infotainment Center of diesel-equipped models."

I think that means they will tell have full it is instead of just being "OK".


My 2020 GMC does have a gauge readout showing def levels. similar to a fuel gauge.
Much improved from the 2015 we had.
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Old 12-23-2019, 11:26 PM   #62
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<snip>
My MBS (Sprinter) has a 6.6 gallon DEF tank.<snip

What year is your Sprinter? Your tank is larger than my 2016. I seem to get between 1500 and 2000 miles to the gallon.
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Old 12-24-2019, 01:05 AM   #63
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Originally Posted by primo20 View Post
FWIW I had a problem with my def system on my ram. Apparently the heater blew and the dealership said it had water in the def tank. They were not going to cover it under warranty unless I could prove I used mopar def. thankfully I had only been using it up to that point.

Now that I’m in a Chevy I’m using GM branded def to avoid any warranty issues. I only mention it in case other dealerships really believe their off brand def is superior to others.
Not disputing your story, but that’s a nonsense claim by the dealer. Unless the warranty specified exactly that you must use only Mopar DEF to keep your warranty rights, they are just blowing smoke. Luckily they didn’t snow you under.
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Old 12-24-2019, 01:12 AM   #64
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Originally Posted by Lins View Post
I’ve only seen where they ‘recommend’ Mopar DEF, they will never put ‘mandatory’ in the manual.
Agreed, also “putting it in the manual” does not make it a specific condition of the warranty. A state AG office would be interested in hearing about this next time a dealer gives a consumer a hassle like this. Show the dealer the name and phone number of your state AG you’re about to call, and I’ll bet they back down in a hurry.

And I would just say to the service manager, “and you guys owe me one for trying to pull that nonsense on me.”
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Old 12-24-2019, 04:33 AM   #65
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seeing the limited shelf life and depending on miles driven per year and temp limiting that shelf life def going bad in your trucks tank is a real possibility .... buy fresh know your usage and fill accordingly ... I am new to def not diesel lots to learn
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Old 12-24-2019, 09:42 AM   #66
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DEF

DEF at some truck stops has there DEF in large containers above ground an in the south those plastic containers can get very hot.
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Old 12-24-2019, 09:59 AM   #67
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I have only had 1 problem with def I filled my def tank in Rex ID and before I got to Island Park my 350 gave low def warning. I was able to go from Kermit Tx to Rex ID on one tank so I took to dealership they reset code and said they added bottle because it was low. I paid my $10 ( for the def) and left without complaint they had the truck less than ten minutes and other than the drive there and back to campground I was only out a little time and $10. Either the pump at the truck stop was wrong or they charged me a bottle after resetting sensor.
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Old 12-25-2019, 10:09 AM   #68
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As to shelf life, I will not need to refill my DEF for over 6 months because of little truck use during the winter months. As such, my DEF is often much older than 6 months...to date no issue.
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Old 12-25-2019, 10:42 PM   #69
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Originally Posted by GypsiesAtHeart2016 View Post
I didn't see anyone else post this. I keep an empty plastic DEF container and fill it at the pumps at truck stops. When I need it, I fill my truck and then refill it at a truck stop pump. Approximately $7.25 to fill.


I've been doing this for over 4 years and have towed my 5th wheel around the country 3 times and from Florida to Alaska and back once. Going through Canada and the Yukon I'll carry two containers. No issues so far.


So why doesn't anyone else do this?


I can get around 1200 miles towing with one tank of def I am sure during that 1200 miles I can refill at truck stop. If I can’t then most auto parts store, wal mart ect sell starting around $9. If I can’t afford an extra $2 every three or four days of driving. I need to rethink the trips I take
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Old 12-25-2019, 10:46 PM   #70
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Originally Posted by medalguy View Post
Just curious about the truck stop DEF. If they buy and pump it into a tank there’s always some in the tank right? How does that make it any fresher than Wal Mart product?


Don’t you do the same with your truck. I assume it never runs completely dry before you refill.
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Old 12-26-2019, 02:45 PM   #71
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Originally Posted by MNtraveler View Post
Agreed, also “putting it in the manual” does not make it a specific condition of the warranty. A state AG office would be interested in hearing about this next time a dealer gives a consumer a hassle like this. Show the dealer the name and phone number of your state AG you’re about to call, and I’ll bet they back down in a hurry.

And I would just say to the service manager, “and you guys owe me one for trying to pull that nonsense on me.”
I never said anything about it being a condition of the warranty. Primo and I also don’t have states or AGs if you read our posts.
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Old 12-26-2019, 04:58 PM   #72
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What year is your Sprinter? Your tank is larger than my 2016. I seem to get between 1500 and 2000 miles to the gallon.
I have a 2018 Coachmen Prism Elite 24EF (on a MBS Sprinter 3500 chassis). It does have a 6.6 gallon DEF tank. We have averaged 15.4 mpg mostly while towing a FIAT 500. Overall we are using about 2% the amount of DEF to the amount of diesel used. or 1:50 I think you are doing better than we are.
I am getting about twice the mpg over our previous RV, a Winnebago 22 foot Minni with a Ford 460 gas engine, that I don't think about 2 cents per mile for DEF is a bad deal.
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Old 12-26-2019, 06:28 PM   #73
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Originally Posted by frank4711 View Post
well .... Super Tech DEF Diesel Exhaust Fluid 2.5 gal $7.88 .... BLUEDEF Diesel Exhaust Fluid, 2.5 gal $12.45 ... Mopar Replacement DEF Diesel Exhaust Fluid 2.5 gal $25.99 ... if it is all the same choice is easy
I always use Super Tech DEF never had any issues or sometimes at the truckstop pump if there isn't a line. I have had only 6.7 Cummins trucks it seems to work well. This 2019 Ram 3500 SRW with the Aisin seems to use a little more than my previous 2017, 2011, 2008 trucks. I always check the shelf life date. Also I never completely fill the tank in the winter to allow for expansion as it starts to freeze at 12F. There is a tank heater on the Rams that keep the DEF from freezing while the truck is running according to the owners manual.
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Old 12-26-2019, 11:38 PM   #74
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<snip> It does have a 6.6 gallon DEF tank. We have averaged 15.4 mpg mostly while towing a FIAT 500. <snip>l.
My 2016 Prism 24G has I believe a 4.5 gal tank (might be 5 gals). I wait til the gauge gets down to about 30% and then add.

We've averaged about 14.7 mpg towing a 2015 Sonic hatchback on a dolly. A lot depends on the terrain - we might see 13.5 in the mountains and then 15.5 in the flats.
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Old 12-27-2019, 08:51 AM   #75
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blue def from orileys auto i have never had a problem in the six years i have had my truck
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Old 12-27-2019, 02:45 PM   #76
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I was a little concerned about my 2019 Ram and how long it sat on the lot in the Florida sun but 1355 miles and seems to be fine .... I am going to use Super Tech I cannot see a difference ... put in 2 1/2 gallons when it got a little past 1/2 don't think dealer filled it up all the way ...
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