Why is there gooey oil in motor oil?

Gooey oil in motor oil can be a result of thermal breakdown, where the oil degrades due to high temperatures over time, leading to the formation of sludge and varnish. This can also occur when the oil becomes contaminated with dirt, fuel, or moisture, increasing its viscosity and making it appear gooey. Using the wrong type of oil or neglecting regular oil changes can exacerbate this issue. Regular maintenance and using high-quality oil can help prevent this problem.