GLK-Class (X204) Produced 2008-2014

GLK 250 --> How much DEF will it use in 10k miles (16k KM)

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Old Sep 16, 2015 | 03:59 AM
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2015 GLK 250
GLK 250 --> How much DEF will it use in 10k miles (16k KM)

2015 GLK 250 --> How much DEF will it use in 10k miles (16k KM)

I filled it up at 16k, and I gave it about 9.46L. Is there likely enough room in the tank for another jug?
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Old Sep 17, 2015 | 01:20 AM
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You did the right thing - and put in a notch over 2 gallons - next time you can use a bright flashlight - and sharp ears - but you seem to be spot on..
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Old Sep 18, 2015 | 10:40 PM
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93 500e. 15 GLK 250
Originally Posted by MichaelGTA
2015 GLK 250 --> How much DEF will it use in 10k miles (16k KM)

I filled it up at 16k, and I gave it about 9.46L. Is there likely enough room in the tank for another jug?
Did you get the fluid from a GTA Benz dealer or?
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Old Sep 19, 2015 | 06:13 AM
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You can purchase DEF (Diesel Exhaust Fluid) - you can "pump" it at a truck stop - note pumped DEF does not have auto shutoff like fuel - or buy a retail 2.5G box (most common brand is Peak) at retail auto parts stores or Walmart at/under $16.

However - on the retail boxed stuff - two IMPORTANT suggestions - never use any type of metal funnel with DEF - and throw away any remaining DEF is a partially used DEF container..
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Old Sep 19, 2015 | 08:24 AM
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2015 GLK 250
My jug came from the Benz dealer. Strange thing, I just saw home depot in Mississauga selling the exact same jug for $14.98 (for a 9.46L )
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Old Sep 20, 2015 | 01:03 PM
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The local Ace Hardware, and the Napa auto dealer here in SW Oregon have bludef fluid in stock. The Ace hardware was selling 2.5 gal jugs for $5.99. It took about 4 gallons to refill the tank at 9500 miles.
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Old Sep 21, 2015 | 08:56 AM
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2015 GLK 250
4 gallons / almost 15 liters.. that is a big variance from the first guy who responded. I'll give it another 2000 miles before I toss another bottle in.

(I have a 9.46L jug kicking around that I wanted to use up).
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Old Sep 23, 2015 | 08:50 AM
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2013 GLK 250
The usage seems to vary by driving type/style. I fill mine up just before every 10k service and the amount has varied. One time, it was less than 2 gallons. Another time it was close to 5. The others have been in the middle of that range. I buy the 2.5 gallon jugs from Autozone for about $12. I did what some people suggested and bought one of the half-gallon bottles from the MB dealer to make refilling easier, but it turned out to be more trouble than it was worth.
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Old Sep 26, 2015 | 12:25 AM
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2014 glk 250BT (RIP, 3/1/17}, 2010 C300
My last def fill was almost the whole tank for 10k miles as I got a low def warning at the 9800 mile mark. Most of the driving miles (70%) have been on interstates.
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