This vehicle has 146k miles and other then service records for years 2007 and 2010, there is no maintenance or repair history. It came to me last month with new looking trans and engine oil, both way over filled and the noisy engine. I drained both oils to proper level. I see a lot of vids on this engine and this noise when cold, however, none sound as loud as mine and also when hot. Here is audio of the sound.      https://imgur.com/a/73h9MKr This sound is present when engine cold and hot.