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What is the Difference Between Summer and Winter Engine Oil?

1 Answers
RobertAnn
07/29/25 12:07pm
Summer engine oil is thicker with better adhesion, which is beneficial for lubrication; winter engine oil is easier to start and has better fluidity. Below is an introduction to engine oil: 1. The effectiveness of engine oil depends on an important characteristic—viscosity. Only when the oil has viscosity characteristics can it provide a protective film for various engine components. 2. Generally, viscosity refers to the physical property of the oil (while the viscosity index is a physicochemical indicator of the base oil), which originally means the degree of difficulty in the flow of fluids or semi-fluids, commonly referred to as 'thick' or 'thin.' Higher viscosity results in slower flow. 3. SAE classifies engine oil into two main categories based on viscosity grade: single-grade viscosity type and multi-grade viscosity type. The single-grade viscosity type is further divided into high-temperature environment-specific and low-temperature environment-specific types.
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What are the reasons why a diesel engine cannot accelerate when stepping on the throttle?

The reasons why a diesel engine cannot accelerate when stepping on the throttle are: 1. Excessive carbon deposits in the vehicle; 2. Poor fuel quality; 3. Blockage in the intake or exhaust system; 4. Aging spark plugs; 5. Cylinder misfire; 6. Insufficient tire pressure; 7. Insufficient engine power; 8. Problems with the combustion chamber, ignition system, or valves. The solutions for a diesel engine not accelerating when stepping on the throttle are: 1. Clean carbon deposits; 2. Use standard gasoline; 3. Replace spark plugs. Maintenance for diesel engines: 1. Break-in: This is the foundation for extending service life; 2. Clean fuel, clean water, clean air, and clean engine body. Diesel and gasoline: These are the main fuels for the engine. If diesel or gasoline is not clean, it can cause wear on the precision components, increase the clearance, leading to oil leaks, dripping oil, reduced fuel supply pressure, increased clearance, blocked fuel lines, and bearing seizure faults; 3. Regularly check and tighten fasteners: Due to vibration, impact, and uneven load during the use of diesel and gasoline engines, bolts and nuts are prone to loosening. Adjustment bolts in all parts should be checked.
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How to Remove External Oil Sludge from the Engine?

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What causes the squeaking noise from the left front wheel that stops when braking?

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What is the fuel consumption per 100 km for the Volkswagen T-Roc 1.4T?

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