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What is the maximum temperature engine oil can reach?

2 Answers

ClaireLee

08/26/25 3:34am

Engine oil can reach a maximum temperature of 120 degrees Celsius. Normal operating temperature: The normal operating temperature of engine oil is generally between 70-90 degrees Celsius, with some localized areas being higher. However, it usually does not exceed the coolant temperature. At higher speeds, the temperature can rise to 100-110 degrees Celsius. But if it consistently exceeds 120 degrees Celsius for extended periods, an inspection is necessary. Effects of oil temperature: If engine oil temperature is too low, it hinders combustion and affects engine performance. Conversely, if the temperature is too high, it puts significant stress on engine components, especially oil seals and gaskets.

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Graham

09/08/25 4:14am

Last time I was stuck in traffic on a long drive, I noticed the oil temperature gauge had shot up to 120°C, so I quickly pulled over to take a break. The mechanic told me that conventional mineral oil can barely handle up to 130°C—any higher and it starts breaking down and losing effectiveness. It’s even scarier with modified cars on the track; some turbocharged engines can push oil temperatures to 150°C or higher, which is why race cars use specially formulated full synthetic oil. High temperatures not only thin out the oil but also cause rubber seals to degrade and leak. The worst-case scenario is cylinder scoring or bearing failure. My advice: keep an eye on the coolant temperature gauge during summer highway drives, and if your car has performance mods, it’s best to install an oil cooler and switch to a high-performance oil with a 40 or 50 viscosity for extra safety.

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What are the reasons for water leakage in the car's front passenger seat?

Water leakage in the car's front passenger seat can be caused by: Clogged sunroof drainage holes. During rainy days, if the sunroof drainage holes are blocked, rainwater cannot drain out and will seep into the car; Aging sunroof rubber seals. Plastic components harden and age over time, and once the sunroof rubber seals age, their sealing effectiveness decreases, leading to water leakage during rain; Clogged air conditioning drainage holes. Condensation water from the evaporator cannot drain out and will seep from the front passenger seat area; Poor door sealing. Incorrect installation or aging and deformation of door seals can reduce the car's sealing effectiveness, causing water to enter the car during rain; Clogged door drainage holes. Due to their low position, door drainage holes can easily get blocked by mud, preventing rainwater inside the door from draining and causing it to seep into the car. Methods to address front passenger seat water leakage: Use a dry towel or water scooping tool to remove accumulated water inside the car; Identify the leakage point and repair it accordingly. Effects of water leakage: Slight leakage around the sunroof can lead to mold growth; Door leakage can damage the door lock and affect the window lifting system; Trunk leakage can cause corrosion.

How to Use the Rear Seat Three-Person Seat Belt?

The usage of the rear seat three-person seat belt is as follows: The left and right seats in the rear are equipped with three-point seat belts, while the middle seat has a two-point seat belt. The method of fastening the seat belts for the left and right seats is the same as that for the driver and front passenger seats. The person sitting in the middle can only use the seat belt to secure their abdomen. When fastening the middle seat belt, simply pull it from one side and insert the buckle into the other side to secure the abdomen. Precautions for using seat belts are as follows: 1. First, regularly check the technical condition of the seat belt. If it is damaged, replace it immediately. 2. Second, correctly fasten the three-point lap seat belt. The seat belt should be worn as low as possible, around the hips, not the waist; the shoulder belt should not be placed under the arm but should be worn diagonally across the chest. Seat belts are for single use only; sharing between two people is strictly prohibited. Do not twist the seat belt when using it. 3. Third, when using the seat belt, ensure it does not press against hard or fragile objects, such as mobile phones, glasses, or pens in pockets. 4. Fourth, do not recline the seat back too much, as this may prevent the seat belt from retracting properly and affect its effectiveness.

Why does the engine RPM not increase when stepping on the accelerator?

Car stepping on the accelerator RPM does not increase due to: throttle problems, fuel supply system problems, ignition system problems, accelerator pedal position sensor problems. After this situation occurs, it should be tested at a professional repair shop or 4S shop. The ignition system of the car engine is mainly composed of spark plugs and ignition coils. The spark plug is a wearing part that needs to be replaced regularly. Long-term use of spark plugs will increase the electrode gap, which will affect the normal ignition of the spark plug. Long-term use of spark plugs will also produce carbon deposits on the electrodes, which will also affect the normal ignition of the spark plug.

How to Inspect Timing Belts and Timing Pulleys?

When inspecting timing pulleys, you can use calipers to measure the pulley diameter and check for wear. Below is relevant information about timing belts and pulleys: 1. The common issue with timing pulleys is wear. During inspection, use calipers to measure the pulley diameter and check for wear. If the pulley diameter exceeds the allowable limit, the timing pulley should be replaced. The manufacturer's recommended lifespan for timing belts is generally 32,000-96,000 km. If damage is found during inspection, the belt must be replaced. 2. Timing belts come in two types: single-sided teeth and double-sided teeth, referred to as single-sided belts and double-sided belts. Double-sided belts are further divided into symmetrical tooth type (DA) and staggered tooth type (DB). Timing belt teeth are categorized into trapezoidal tooth timing belts and arc-shaped tooth timing belts. Timing belt models are classified into seven types: lightest MXL, ultra-light XXL, extra-light XL, light L, heavy H, extra-heavy XH, and ultra-heavy XXH. 3. Timing pulleys are typically made from materials such as steel, aluminum alloy, cast iron, and brass. Their inner holes can be round, D-shaped, or tapered. Timing belt transmission consists of a closed-loop rubber belt with evenly spaced teeth on its inner surface and corresponding pulleys.

Why Can't the Car Windshield Washer Spray in Winter?

If the windshield washer fluid doesn't spray, it may be due to low fluid level. Here are the reasons and solutions for windshield washer fluid not spraying in winter: 1. If the washer fluid is full but still doesn't spray, the nozzle might be clogged with dust. Try using a fine needle to unclog the nozzle. Considering it's winter, the reservoir or pipes might also be frozen. After warming up the car sufficiently, try parking it in the sun. If it starts spraying, it means you need to switch to a higher-grade antifreeze washer fluid. If there's no sound from the motor when trying to spray, and the wipers don't work either, check if the fuse is blown or the motor is damaged. If none of these are the issue and the washer fluid still won't spray, consider the possibility of the pipes being clogged with debris. 2. If the washer nozzle is clogged, you can use a needle or thin wire to unclog it. Locate the nozzle position and gently pry it up with a screwdriver—the nozzle is a snap-fit structure and doesn't require much force. Once the nozzle is lifted, you'll see a small hose connected underneath. Remove the nozzle from the hose directly, but be careful not to let the hose fall into the car, as you would then need to remove the entire panel to retrieve it.

What are the techniques for shifting gears in a manual transmission car?

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