How do you classify 2 stroke engine oil into FA FB FC FD grades? What s the difference? Which is sui

It is the grade of two-stroke engine oil, and the further back the letter after F, the better the oil. FD is better than FC and better than FB.

Can Shell 32 motor oil be used in a four-stroke car?

The difference between a two-stroke and a four-stroke is the structure and the working process. The details are shown in the following figure:

1. Different structure: the two-stroke is mainly composed of cylinder head and cylinder. The four-stroke consists of a cylinder head, a cylinder head head, a cylinder, a piston, a piston ring, and a valve mechanism.

2. The working process is different: the crank of the two-stroke engine rotates 360° to complete a working cycle. The four-stroke engine crank rotates 720° to complete a duty cycle.

Intake stroke: When the piston is at a specified crank angle before the top dead center, the intake valve opens and the combustible mixture is sucked into the cylinder. When the piston moves from the top dead center to the bottom dead center, the exhaust valve is closed at a specified crankshaft angle at the top dead center, and the cylinder volume above the piston increases at the same time, so that the cylinder forms a vacuum, and the combustible mixture continues to be sucked in through the intake valve.

When the piston reaches a specified crank angle after the bottom dead center, the intake valve closes, and at this time, the intake working process ends.

What are the differences between a two-stroke and a four-stroke engine? Do you understand after reading it?

From the 2 and 4 you know the good pulling horsepower and torque of the 4 cylinders. All are larger than 2 cylinders

See how it works. Four-stroke stable and fuel-efficient. Two-stroke violence costs oil, and two-stroke maintenance is better than four-stroke.

The quality classification of two-stroke engine oil is not completely unified in the world at present, and in fact, the Japanese Automotive Standards Organization is generally used.

JASO); China is divided into ERA, ERB, ERC, ERD. FC grade oil is generally recommended. FC is a semi-synthetic motor oil with less smoke exhaust and good cleanliness.

High power is recommended above SG level, or synthetic motor oil. The mixing ratio of gasoline engine oil should generally be controlled at 20-25:1 for the best.

Lubrication method of two-stroke internal combustion engineThe two-stroke gasoline engine mainly uses fuel pre-mixed oil (50:1) to enter the cylinder, which circulates inside the gasoline engine, so that the bearings, cylinders, pistons and other mechanical parts are lubricated and part of the oil is burned out in the combustion chamber, and the other part is discharged outside the gasoline engine with the exhaust pipe in an unburned state.

If the engine oil is in the engine at high temperature and high pressure for a long time, it will continue to mix with harmful substances, and over time, it will produce chemical changes, making the oil thinner, dirty, and producing sludge.

The winter oil grades of SAE lubricating oil viscosity classification are: 0W, 5W, 10W, 15W, 20W, 25W, the symbol W represents winter, the smaller the number before W, the smaller its low temperature viscosity, the better the low temperature fluidity, and the lower the applicable minimum temperature.

Motorcycle engine oil is divided into different grades according to the different seasons of use, as follows:

1. The winter oil grades of SAE lubricating oil viscosity classification are: 0W, 5W, 10W, 15W, 20W, 25W, the symbol W represents winter, the smaller the number before W, the smaller the low temperature viscosity, the better the low temperature fluidity, and the lower the applicable minimum temperature;

2. The summer oil grades of SAE lubricating oil viscosity classification are as follows, the larger the number, the greater the viscosity, and the higher the applicable maximum temperature;

3. The winter and summer general oil grades of SAE lubricating oil viscosity classification are: 5W W W

Unless you're buying a two-stroke, there's no need to add oil to the gasoline, but even two-strokes are automatically mixed by a dedicated oil pump.

Ha ha. Who taught you to change it once?? Don't you think it's weird? The first time the new car plus the engine oil is changed for 300 kilometers, why is it changed for 200 kilometers for the second time? More diligent than the first change?

You listen to me, if you don't worry, you can change it once in 300 kilometers, change it again in 1000 kilometers, and then change it every 1000 kilometers, this is a normal oil change, if you want the power of the car and the life of the engine to be extended a little more, then change it every 800 kilometers after 1500 kilometers, seriously, it is not false to change the oil, but there is no need to change it too well, motorcycle oil is divided into three kinds, one is fully synthetic, one is semi-synthetic, There is also a type of ordinary engine oil. Not all motorcycles have to be replaced. Some motorcycles change the best and most expensive engine oil, but they will not be adaptable.

According to the situation of the car itself, just change the appropriate oil, as for your Suzuki King, you can change the semi-synthetic one, ** generally around 30 yuan, do not change the fully synthetic engine oil, the oil is expensive, not practical, that kind of engine oil is for large displacement and male upgrade motorcycles.

My Power Star 125cc motorcycle, when the mileage reaches 700 kilometers, it starts to pull the highway, the fastest reaches 115 kilometers, it has never drunk good oil since I followed, it has always been 10 yuan a bottle of engine oil, but now it has been 5 years, the power is still very good, and now the speed can still run to 90 kilometers, that is because I change the oil every 700-800 kilometers, and some of my friends only change it once until 2000 or even 3000 kilometers.

The brand of engine oil does not matter, and expensive is not necessarily good. 125, don't add too good oil.

I often pour oil into the machine, and I really don't really think about it.