Lean Engine Oil: Introduction And Solution

The engine plays a big role in the car's running. There are many mechanical components in the engine that move with friction against each other. These parts move and work in a poor environment. The engine temperature can reach 400°C to 600°C. When you buy a new car, you will have a car maintenance manual for yourself. The advice is to change the oil regularly.

1. Introduction

2. Reason

3. Conclusion

Under harsh working conditions, only qualified oil can reduce the wear and tear on engine parts and extend their service lives. Nowadays, vehicles that consume fuel are still popular. As it is known as the engine's "blood", oil plays a vital role in protecting the engine.

The engine oil is necessary. New technology allows natural gas to be made into a pure, fully synthetic base oil, to which exclusive Power Clean technology is added, creating a lubricant with superior cleaning and protection properties.

1. Introduction

In fact, one of the most important indicators of engine oil is viscosity, which is neither too high nor too low. If it is too low, it causes insufficient sealing, which will lead to severe setbacks, weak acceleration and increased fuel consumption.

High oil viscosity can lead to weak acceleration, more fuel consumption, and reduced mobility, so keeping the oil within a suitable viscosity range is important.

As you know, the oil will be leaner when the engine is hot because the distance between the lubricant molecules becomes more viscous at higher temperatures.

However, the way to accurately determine viscosity is to measure it with equipment in a laboratory, and sensory observation is not accurate.

In most cases, engine oil becomes leaner first and then richer. This is because it contains the viscosity index improver, which is something that, over time, viscosity modifiers will gradually lose their original viscosity.

After a certain period of time, due to the oxidation of the oil, a large amount of sludge and some impurities are produced, which are dispersed in the oil by the cleaning dispersant, resulting in an increase in viscosity.

At this time, the oil has slowly failed and should be changed as soon as possible. Otherwise, it can lead to severe wear and tear, and even serious accidents, such as cylinder scoring.

2. Reason

Poor quality fuel

Due to the poor quality fuel, the car engine is prone to the formation of a large amount of carbon deposits in the combustion chamber during the driving process. Carbon deposits are the culprit of various engine problems.

Carbon deposits can be in the grooves of the pistons. This may cause the piston rings to stick together. The rings can't seal completely, and they seize up. The oil, therefore, enters the combustion chamber and burns up.

The "sticky" piston rings greatly reduce the sealing ability. The oil that is not scraped off is also burned off.

The long-term sludge can not be cleaned, which blocks the oil return hole on the piston ring. As a result, the oil can not flow back normally, and the oil left in the combustion chamber is burned.

Carbon deposits will, in turn, increase the wear between the piston and the cylinder wall, causing excessive clearance. The oil may enter the combustion chamber and burn off.

Deterioration of valve stem seal

This symptom can result in a poor seal. The oil can leak into the combustion chamber. The valve stem seal is arguably the most vulnerable thing in the engine. If it is not replaced for a long period of time, it is extremely likely to cause some problems.

Aging of front and rear crankshaft oil seal

The front and rear crankshaft oil seal contacts oil. The engine's impurities and continuous temperature changes make the sealing effect gradually weakened. It causes oil seepage or leakage, thus leading to increased oil consumption. Furthermore, oil vapor will also be under high pressure in the seal weakness overflow, resulting in oil consumption.

Turbocharger failure

Damaged seal ring causes oil leakage. The oil enters the combustion chamber through the engine intake pipe. On the other hand, Bad-quality oil leads to poor lubrication and bearing wear, resulting in increased oil consumption.

High percentage of fuel in oil

Faulty fuel system and poor fuel atomization make the fuel or a large amount of overly rich mixture into the crankcase. It will dilute the oil and cause excessive oil consumption.

Unqualified oil

Bad oil leads to increased wear. In addition, too low or too high oil viscosity may cause poor engine lubrication so that the wear of piston rings and cylinder wall increases. The sealing performance decreases, which leads to problems.

In addition, if the oil is too much, the splash lubrication part will be too much to flee into the combustion chamber due to the high oil pressure.

Cooling system problem

The coolant may mix into the oil, causing it to dilute and deteriorate.

Timing system issues

This results in problems according to the engine management for which the vehicle was designed. Improper ignition of the vehicle can cause the engine ping, leaving it with inadequate combustion and highly susceptible to generating carbon deposits in the combustion chamber.

3. Conclusion

There are several reasons for lean oil.

●  Water mixed with oil

After the water has been mixed into the oil, it reduces the oxidation resistance, resulting in a leaner and leaner oil. The lubrication may no longer be good.

●  Oil enters fuel

If the engine idles for a long time or the car starts repeatedly, the air-fuel mixture will enter the crankcase and make the oil thinner.

●  Improper use of engine oil

Bad engine oil leads to many failure problems, such as carbon deposits and hard starting. Therefore, we must be careful to identify the oil when we buy it so as to avoid harm.

Lauritz Carolsfeld        December 24, 2021

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