Introduction

As a driver with over a decade of experience, I deeply understand that car maintenance is both a complex and fascinating subject. I remember when I first bought my car, I was overwhelmed by the numerous components in the engine compartment and didn't even know how to check the engine oil. However, after years of exploration and learning, I've discovered that car maintenance isn't difficult at all once you master the right methods and techniques - it can actually become an enjoyable activity.

Every time I open the hood and see those parts gleaming in the sunlight, I feel a great sense of accomplishment. Today, I'm compiling all the maintenance experience I've accumulated over the years, hoping to help more car owners, especially newcomers, learn scientific car maintenance and keep their vehicles in optimal condition.

All About Tires

When it comes to car maintenance, many people immediately think of oil changes and car washing, but often overlook the most basic tire maintenance. As the only components that contact the ground, the importance of tires cannot be overstated. I often see drivers speeding down the road with nearly bald tires, which makes me extremely nervous.

Besides checking the tire wear indicators, there's a particularly useful method to determine if tires need replacement. There's a "Lincoln test" popular abroad: insert a Lincoln penny upside down into the tire tread - if you can see Lincoln's head, it's time to replace the tires. In other countries, we can use a one-yuan coin instead; the principle is the same. Insufficient tread depth not only affects braking performance but is extremely dangerous in rainy conditions.

Tire pressure is a technical matter. Many people think tires are fine if they look full, but this visual method is particularly unreliable. The correct approach is to check tire pressure at least monthly, preferably when the tires are cold. I've seen many drivers take shortcuts and drive on highways with underinflated tires. Underinflated tires cause excessive wear on both sides, increase rolling resistance, waste fuel, and can easily lead to blowouts.

I personally recommend carrying a portable tire pressure gauge. There are many accurate digital pressure gauges on the market now, costing only one or two hundred yuan - definitely a worthwhile investment. Also, tire pressure requirements vary by season; pressure increases with temperature in summer and decreases in winter. I suggest adjusting according to the vehicle manual's recommended values rather than completely trusting 4S shop advice.

Tire rotation is also an important topic. Many know about regular rotation but aren't sure how to do it. There are mainly two rotation methods: front-wheel drive cars generally use front-to-back rotation, while rear-wheel drive cars use cross rotation. I recommend rotating every 8,000-10,000 kilometers to ensure even wear and longer tire life.

Another often overlooked detail is the spare tire. Many car owners might go a whole year without checking it, only to find it flat or deteriorated when needed. I suggest checking the spare tire's condition, including pressure and appearance, during each maintenance service.

System Inspection

At the end of each month, I give my car a comprehensive inspection. This habit, maintained for many years, has saved me considerable repair costs. I suggest choosing a sunny weekend, finding an open space, and spending an hour or two doing a thorough check.

Let's start with the basic lighting system check. This task is best done with a helper, as it's difficult to operate and observe simultaneously. I usually have someone stand outside to check if the headlights, low beams, turn signals, brake lights, and reverse lights are working properly. Pay special attention to brake lights as they're crucial for driving safety. I once almost got rear-ended because I didn't know my right brake light was out. Also check for cracks, yellowing, or water infiltration in the light covers.

Battery inspection is also crucial. Modern cars have increasingly more electronic equipment, placing higher demands on batteries. During each inspection, I focus on several areas: first, the terminal condition - if you find white powdery corrosion, address it promptly. My method is to apply a paste made of baking soda water to the corroded areas and gently brush it off with a soft brush when dry. Second, check if the mounting bracket is secure - if loose, tighten it immediately as vibrations during driving could damage the battery. Finally, check the electrolyte level if it's a water-added type battery.

Regarding filters, this is an issue that troubles many newcomers. There are three main types of filters that need regular replacement: air filter, cabin filter, and oil filter. The air filter cleans the air entering the engine - if too dirty, it affects engine intake, leading to power loss and increased fuel consumption. Checking if it needs replacement is simple: hold it up to sunlight - if you clearly can't see light through it, it's time to replace it.

Many people overlook the cabin filter, but it's particularly important. It filters air entering the cabin - if not replaced for a long time, it not only causes odors but may breed bacteria. I recommend replacing it at least annually, or every six months if you frequently drive in areas with poor air quality.

The oil filter is usually replaced with the oil change, which makes it easier to remember. However, note that filter quality varies greatly between brands - I recommend choosing well-known brands. Although more expensive, they're safer and more reliable.

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