NHTSA Complaint #11550168 — 2018 KIA OPTIMA

I purchased my 2018 Kia Optima directly from the dealership, brand new. I've had the vehicle since then and have followed all of the warranty guidelines and only went to them for oil changes & other maintenance issues. Since February 2023 I've noticed where i've been having oil loss, but no sign of an oil leak. When I first noticed this, I would take a turn and my oil light would come on. I'd check the oil and it'd be low so I would refill my oil. However, this was happening 2 months after my last oil change which wasn't normal. I took the vehicle to Kia and they did an "Engine Consumption Test" where I had to drive for 1000 miles with a seal on the drain plug. After the 1000 miles, I came back and I was only 1/2 quart low. According to Kia it didn't meet the guidelines for engine replacement so they topped off my oil and I left. About 2 weeks after, my oil light came back on. I went back to Kia and spoke with the Shop Manager who stated I was 3 1/2 quarts low! He added oil to my engine and we did another round of the consumption test. When I came back in after that, I was 2 quarts low so that meant I qualified for a "Consumption Cleaning". They kept my vehicle overnight & I had to drive another 1000 miles. When I came in after my 1000 miles again I was only 1/2 quart low and therefore Kia said there wasn't an issue. I've reached out to multiple auto repair shops who state it is a Kia problem, that the engine is using it and processing it out of the exhaust. I don't know what else I have to do in order for Kia to honor the 20 year, 200k warranty. I have all documentation for all of my oil changes and from the consumption tests also.