I own a Hyundai Tucson 2018 model and recently it started making the noise. i got it check with the private auto shop and they said it the engine issue so i took it to dealership as it was under the 100,000 power train warranty. The dealership ask me about the invoice of regular oil change invoice which i provided to them but they simply denied it. the dealership is located on route 1 south Brunswick new jersey.