DEF?s and usage? - Chevy and GMC Duramax Diesel Forum
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Old 10-09-2013, 03:29 PM   eBay Motors  #1 (permalink)
 
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DEF?s and usage?

I just bought a 2013 2500 duramax put just shy of 2000 miles on it and checked def on dic said 22% left added 2 gallons all good major ? is how often do you add def or how many miles do you get out of the def, I drive a mix of highway and in town I plan on using and keeping gm def on hand aprox a case at a time or 2 I do not want quality issues with it.

I am loving this truck and am pretty up on preventative maintenance fluid and filters.

I had no idea if tank was full from dealer when I bought it?
thanks in advance
carl
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Old 10-09-2013, 03:38 PM   eBay Motors  #2 (permalink)
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About 1000mi to a gallon. Tank is 5.5gallon I believe.
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Old 10-09-2013, 03:46 PM   eBay Motors  #3 (permalink)
 
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thanks for the info I have been searching and am finding different info
I plan on keeping a gallon or 2 on hand in truck and maybe a case in garage
added 2 gallons this evening all good have 2 on hand and will be buying a case from dealer on friday.

The station I usually fuel at and time of morning I fuel at does not have def available other then during normal business hours when store is open;(
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Old 10-09-2013, 03:57 PM   eBay Motors  #4 (permalink)
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I wouldn't stress over it. The truck gives ample warning when it's running low and you can pick it up about anywhere. I don't recommend stockpiling as storing for long periods of time is when the stuff goes bad. Especially in warm conditions.
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Old 10-09-2013, 04:09 PM   eBay Motors  #5 (permalink)
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Quote:
Originally Posted by cgff View Post
I just bought a 2013 2500 duramax put just shy of 2000 miles on it and checked def on dic said 22% left added 2 gallons all good major ? is how often do you add def or how many miles do you get out of the def
Sounds like your dealer did the same thing to you as they did me.....didn't fill the tank but said they did. I got luck and there was 2 gal under the back seat.

I average 6K there bouts per 2.5 gal box (I buy blue DEF from Wal Mart). I drive mostly highway and do tow some but it's just a 18 foot bass boat so it don't work the truck at all.

Don't know about the 13's but my 11 gives a you a DIC message of 999 miles left on DEF. I always add a 2.5 gal jug at that time.

Tim
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Old 10-09-2013, 04:39 PM   eBay Motors  #6 (permalink)
 
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I was just shy of 2000 miles and checked dic and was at 22% we are experiencing some pretty nasty weather here but when the rain lightened up i added 2 gallons I have 2 gallons on hand and will top off on friday afternoon
then replace with case I should be good to go for a while, weather is getting cooler now here in NC so a case in the garage should be ok I will only keep a case on hand 4 gallons, at a time after def tank fill
I work part time and the 2 days I work I have a total 400 mile commute just do not want to have an issue on the road
Just unsure what to expect with a full def tank and mileage

Thanks for all the help
carl

Last edited by cgff; 10-09-2013 at 04:43 PM.
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Old 10-09-2013, 04:52 PM   eBay Motors  #7 (permalink)
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What kind of mileage are you getting?
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Old 10-09-2013, 07:47 PM   eBay Motors  #8 (permalink)
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Def usage should be about 1.5% of fuel usage (according to GM).
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Old 10-10-2013, 03:33 AM   eBay Motors  #9 (permalink)
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DEF is available at any Walmart and most auto parts stores. I wouldn't stock any. You have plenty of time to get some when first warning comes up. Wouldn't carry any in truck, especially in summer, unless you are traveling a long distance.
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Old 10-10-2013, 05:50 AM   eBay Motors  #10 (permalink)
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DEF is available at any Walmart and most auto parts stores. I wouldn't stock any. You have plenty of time to get some when first warning comes up. Wouldn't carry any in truck, especially in summer, unless you are traveling a long distance.
DITTO.....

Most Truck Stops sell it too at the pumps. Every Wal Mart has it and there everywhere. 2.5 gal jug $11.97 at WM.

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