Is this pertaining to a certain engine (i.e. 2.0t), my 2014 Santa Fe knocks so loud on startup that you can hear it across the street then goes away within 10 seconds and doesn’t return until the next cold start.

About my recall 2013 Hyundai Sonata, the Service Manager stated that their remedy was to first lesson to Engine’s sound, I guess at various RPM’s to see if there are any differences and compare to normal Engine Sounds.
They also stated that the original oil dip-stick will be replaced with a different one, that would allow for an additional 1 quart of oil to be added at completion of test results. (VIN) 5NPEB4AC3DH799149 162
Please review and advise!