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    Customer Satisfaction Notice 90A Diesel Exhaust Fluid

    https://static.nhtsa.gov/odi/tsbs/2023/MC-10236935-9999.pdf CAUSE: • Repeated freeze/thaw cycles of the urea tank to cause solid DEF crystals to form and settle on the focus tube, blocking the level sensor signal. • Rapid temperature swings from below freezing to above freezing causing an...
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    Customer Satisfaction Notice 90A Diesel Exhaust Fluid

    Well, she be running fine so far, back up to 19 MPG on light throttle and empty. I went in with 100% full DEF, they filled it again to 75% as per "winter specs" even though I live on the coast of PNW haha. Barely hits freezing temps more than 1 week out of the year.
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    Customer Satisfaction Notice 90A Diesel Exhaust Fluid

    At least, that is what they claim, but I trust no story from big corp.
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    Customer Satisfaction Notice 90A Diesel Exhaust Fluid

    Thank you for the update. Good to know.
  5. C

    Customer Satisfaction Notice 90A Diesel Exhaust Fluid

    Any update? Any noticeable fuel econ issues? My 2020 is getting 90A recall right now. Before 90A: Avg 18.6 MPG truck only on 35s, 14.5 MPG pulling 20' tow behind (empty), and 12.8 MPG same trailer loaded (8K-10K). I'll update my findings good or bad.
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