Some Mazda 6 owners report experiencing oil burning issues that necessitate frequent seal replacements between oil changes, indicating potential problems with the engine's oil seals. These issues can stem from a worn oil pan gasket, which is essential for the lubrication system and can lead to damaging oil leaks. Additionally, owners of 2021 Mazda models with the 2.5T engine manufactured before September 14, 2021, have reported excessive oil consumption due to faulty valve guide seals, requiring regular oil top-offs. Mazda dealers have been addressing these concerns by replacing oil seals in turbo models exhibiting these symptoms, particularly focusing on the exhaust valve seals. While some oil loss between changes may be manageable, consistent oil additions suggest a need for prompt repairs. As engines age, minor oil top-ups are typical, but excessive consumption, such as needing a quart every 1 to 2 thousand miles, signals a more significant issue. After modifications to the valve stem seals, some owners have noted that damage may still allow oil to leak into the combustion chamber, further contributing to oil burning problems. Addressing these concerns is crucial to prevent further engine damage and maintain optimal performance.