I noticed an intermittent high pitched noise (not loud but noticeable and rather like wind noise) at freeway speed on my 2.8 (2016). It came and went during that run and did not seem related to speed or throttle and was not wind noise. The next day I 'worked' the engine on a longer run and it now seems to have gone. Has anyone else noticed this.
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High pitched whistle - now gone (?)
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