Without fresh oil, your engine can’t properly dissipate heat. Old oil loses its viscosity, meaning it can’t absorb or carry away heat as effectively. Over time, excessive heat warps metal components, leading to severe and irreversible engine damage.
Oil’s primary job is to reduce friction. As it degrades, oil turns into sludge, which can’t lubricate effectively. This increased friction causes wear on crucial engine parts, leading to metal grinding against metal, which accelerates part wear and shortens your engine’s lifespan.
Old oil becomes a breeding ground for contaminants. Dirt, metal particles, and combustion byproducts build up, turning oil abrasive. This grit scrapes against engine parts, causing corrosive damage and clogging filters, which can lead to catastrophic engine failure if unchecked.