Where does a sedan need to be greased?
2 Answers
Sedans do not require grease during maintenance, while large trucks do. The fluids needed for car maintenance include: engine oil, transmission fluid, brake fluid, coolant, differential oil, etc. Some parts of the car also require grease, such as door hinges, hood hinges, and trunk lid hinges. The key to sedan maintenance is replacing wear-prone parts and fluids. Wear-prone parts on a car include belts, spark plugs, batteries, tires, brake pads, brake discs, engine oil filters, fuel filters, air filters, cabin air filters, and fuel filters. For a car, the most crucial fluid is engine oil, which is referred to as the lifeblood of the engine. Without engine oil, the engine cannot operate normally.
I've been driving for twenty years, and there are quite a few places in a sedan that need regular lubrication, mainly the moving parts. For example, the ball joints and tie rod ends of the front suspension—if they lack grease, the steering will produce loud noises, making long-distance driving dangerous. Door hinges and trunk locks are also important; without grease, they won't open or close smoothly and can rust in rainy weather. Lubricating the seat rails makes adjustments smoother, saving both money and hassle. I once encountered a chassis bearing without grease, and the noise at high speed was alarming—fortunately, I applied high-temperature grease in time to avoid major repairs. Checking these points every six months, cleaning off old grease and applying new grease, can extend the lifespan of parts by three to five times. Forgetting to lubricate leads to rapid wear and high costs, but don’t overdo it, as excess grease can attract dust and cause blockages. Usually, general-purpose lithium-based grease is sufficient; using a syringe or spray makes application easy, keeping the car in good condition for safe and smooth driving.
