Did your complaint get you anywhere? I'm at a loss as to what to do. My 2017 Murano with 76000 miles just started doing this intermittent smoking. Dealership tells me it's sludge from improper maintenance and I need a new engine. There's no way I missed an oil changeLooks like this is common. I just had my 2018 towed into the dealership . It only has 31,000 and white smoke is coming out of the tailpipes. I was given the same excuse most of you posted. They tried to say it was lack of maintenance on my end (not true) and I need a new engine at a whopping 15,000 … we filed a complaint. That’s so crazy these Nissans are having thus problem.