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My 2020 EcoDiesel had the DEF recall applied a few months ago, I've had no issues at all.
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By your description, it sounds like your "Service Adviser" is a little snarky, which is both unprofessional and unhelpful. There's no need for that kind of childish behavior, ever, from anyone, anywhere. But least of all from a supposed professional representing the company that generates her paycheck. Feel free to tell her I said this. If I was in your shoes, I'd get a different SA or go to a different dealership for my service.
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