AdBlue question?
Thread Starter
Senior Member
Joined: Mar 2015
Posts: 442
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From: Ohio/Florida
'10 C300, '15 ML250BT, '22 M850i Vert
AdBlue question?
Has anyone gone to a truck stop and used the DEF pump. I had a diesel MH and at Flying J it is about $2.80 a gallon. You can also fill it and not have to guess how much is left in the tank. I just don't know if the nozzle will fit. Please, no speculation just someone with experience. Thanks,
Member
Joined: Oct 2013
Posts: 224
Likes: 28
From: Western Europe
2017 GLS 350d
I have always refilled at truck stops. I never bought a single bottle of DEF. The nozzle fit but some of them will require a small adapter to be fitted to the nozzle first. The guy at the truck stop always had that handy when it was needed. I usually refilled every 5000km or so, and never managed to put more than 5 liters at once.
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Joined: Nov 2012
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A gaggle of MB's
On a ML250 - there is no real advantage of "topping off" - so you know when the tank hits the initial "low DEF" after 8K-11K miles depending on drive style - your reserve at that point is good for about 1200-2000 miles - however. if you go too far after that - the 2nd level warning - "Low DEF 9 Starts Left" - you need to take care of it right away because once you run out of starts - you engine will be "locked" and will need to be towed to the dealer for system unlock
Pump DEF is fine - so are the 2.5 gal retail-auto-parts-store DEF boxes for $15 or under - if you use the "box" - throw away whatever is left - no need to risk contamination etc over small dollars..
Pump DEF is fine - so are the 2.5 gal retail-auto-parts-store DEF boxes for $15 or under - if you use the "box" - throw away whatever is left - no need to risk contamination etc over small dollars..
