Corrosive buildup around def filler.
10

Asked by Moodywelman Jun 13, 2018 at 09:03 PM about the Mercedes-Benz Sprinter

Question type: Maintenance & Repair

Around the DEF filler and cap is a white buildup on my 2015 Sprinter.  The
service guy at the RV dealership where I bought it said it is supposed to be
there and that I shouldn't clean it off.  If that is the case then I couldn't even
fill it.  What is the fact of the matter?

2 Answers
86,145

Mark answered 5 years ago

Two choices...try and clean up the area with some water.... I don't know how bad it is...yes, it builds up and can look nasty if it spills... you need to be careful......OR...go to the Mercedes Benz dealership...

2 people found this helpful.
Mark helpful
10

Moodywelman answered 5 years ago

Thank you. Now another question arises. In my reading I find that DEF has a short (6 months or so) shelf life. I won't near use all the fluid in 6 months . So what happens then? The coach is 3 years old and has 21,000 miles on it. Most years will get between 3-5 thousand miles. Does that mean going to the dealer and having the DRF drained and refilled every year?

1 people found this helpful.
Mark helpful

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