What is the difference between lubricating oil and engine oil?
4 Answers
Introduction to the differences between lubricating oil and engine oil is as follows: Differences in lubrication scope: Engine oil is a type of lubricating oil, but not all lubricating oils are engine oil. Engine oil is one category within lubricating oils. Differences in definition: All oils that have a lubricating effect on mechanical parts can be called lubricating oil, while engine oil specifically refers to engine lubricating oil. Differences in function: Lubricating oil is a type of oil liquid used to reduce friction in machinery and equipment, such as gear oil and anti-wear hydraulic oil. Engine oil serves to lubricate, cool, clean, seal, cushion and absorb shocks, as well as prevent rust and corrosion in engines.
I'm the type who loves delving into automotive details, so I need to clearly understand the difference between lubricating oil and engine oil. Lubricating oil is a broad term referring to all oils that reduce mechanical friction, such as those used in transmissions, brake systems, or other industrial equipment. Engine oil specifically refers to the lubricating oil used inside engines, protecting core components like pistons and cylinders from wear and high temperatures. Engine oil has special formulations—it must withstand high temperatures, resist corrosion, and clean carbon deposits. Other lubricants like gear oil or hydraulic oil each have specific purposes, and misuse could damage components. When changing engine oil, I always check the SAE viscosity rating on the container (e.g., 5W-30) to match the vehicle manual. Regular maintenance is crucial: replacing it every 5,000 to 10,000 kilometers extends engine life and avoids major overhauls. Confusing these oils may cause malfunctions, so beginners should consult professionals.
With over 20 years of driving experience, I've been through quite a few things and understand the difference between lubricating oil and engine oil. In my younger days, I once mistakenly used gear oil as engine oil, which caused the engine to overheat and develop issues. Engine oil is specifically designed for the engine, aiming to reduce internal friction and ensure smooth operation; lubricating oil has a broader scope, which can include transmission fluid or power steering fluid. Engine oil requires regular changes, typically during maintenance intervals like every six months or 5,000 kilometers, as it tends to get dirty and lose effectiveness under high temperatures. General-purpose lubricating oil is used elsewhere, such as the chassis oil for my old car, which must be selected according to the manual. The key is to use the right oil in the right place to save hassle and repair costs. For daily maintenance, choosing the right oil viscosity is crucial—for example, using oil with good low-temperature fluidity in winter and not skimping on quality to save money.
As a new driver, I was initially confused about the difference between lubricating oil and engine oil. Lubricating oil is a general term referring to all oils that reduce mechanical wear; engine oil is one of them, specifically used for car engines. In my car, the manual clearly states that engine oil should be of a specific specification like 0W-20, while other parts like the braking system may have separate lubricants. Simply put, engine oil is the portion of lubricating oil used for the engine. Don't mix them up—using the wrong one could cause problems. I recommend doing more research or asking a mechanic at the beginning, and keeping maintenance simple.
