Can Transformer Oil Be Used as Engine Oil?
2 Answers
Transformer oil cannot be used as engine oil. Definition of Transformer Oil: It is a fractional distillation product of petroleum, mainly composed of compounds such as alkanes, cycloalkane saturated hydrocarbons, and aromatic unsaturated hydrocarbons. Commonly known as insulating oil. During operation, transformer oil primarily functions to dissipate heat and cool; it insulates and maintains insulation for components like windings (keeping them in good insulating condition); it serves as an arc extinguisher at high-voltage lead wires and tap switch contact points, preventing corona and arc discharge; and it is widely used as a liquid seal in hydraulic safety valves. Definition of Engine Oil: Engine oil, also known as engine lubricant, functions to lubricate and reduce friction in the engine, assist in cooling, seal against leaks, prevent rust and corrosion, and absorb shocks. It is often referred to as the 'blood' of a car. Engine oil consists of base oil and additives. The base oil is the main component of the lubricant, determining its basic properties, while additives compensate for and improve the shortcomings of the base oil, imparting new performance characteristics, making them an essential part of the lubricant.
I have some knowledge about car maintenance, and you can't just use any oil indiscriminately. Transformer oil and engine oil are completely different. Transformer oil is designed to insulate electrical equipment and contains special anti-arc components, but it lacks the necessary anti-wear additives and viscosity modifiers found in engine oil. If you force it into an engine, it oxidizes easily at high temperatures, forming sludge and accelerating component wear. I've seen cases where misuse led to increased engine noise, a spike in fuel consumption, and repair costs running into thousands. On top of that, engine oil also cleans carbon deposits and cools the engine—tasks transformer oil can't handle. When changing oil, it's best to choose reputable brand engine oil and check the recommended specifications in your vehicle's manual. Don't skimp on this and risk damaging major components.
