# How to calculate API?

### How to calculate API?

For example, if a liquid has a degree APIs 10°APIs at a temperature of 15°C, this liquid has a density of 1.00 (that of water, 1 kg/litre) at the same temperature. So 22°APIs at 15°C = 0.9218 density at 15°C and 35°APIs at 15°C = 0.8498 density at 15°C.

### How to read oil viscosity?

The viscosity of one oil engine is therefore expressed with a cold grade and a hot grade….For information, in the cold of each oil :

1. the 20W is used down to -10°
2. the 15W is used down to -15°
3. the 10W is used down to -20°
4. 0.5W is used down to -25°
5. 0W is used down to -30°

### What oil standard?

1.1.1 The Standard SAE There are two categories, i.e. the “oils summer”, indicated by the numbers SAE 20, 30, 40 and 50 and the oils say “winter” indicated by SAE 0W, 5W, 10W, 15W, 20W and 25W.

### What oil for a 4-stroke engine?

In almost all regions with a temperate climate, a oil 10 W 40 is ideal for lawn mowers motor gasoline four time.

### What is the density of oil?

A barrel of oil raw, API degree = 35 and of Volumic mass around 0.85 g/cm3, led by refining operations to volatile products such as gas liquids (propane, butane) of specific gravity 0.55 and gasoline with a specific gravity of 0.737 or white spirit with a specific gravity of 0.74.

### What is the density of the oil?

900 kg/m3 Theoil is less dense than water. Its density is equal to 900 kg/m3, itisi.e. at 0. kg/m3.

### What is the difference between 10W40 and 15W40 oil?

The big one difference will be done on the quality of theoil basic. In summary, you will consume more when cold with a 15W40 only with a 10W40 and more with 10W40 than with a 5W40.

### What is the difference between C2 and C3 oil?

C2 : oil high quality intended largely for PSA (which has common engines with Ford by the way) C3 : oil of high quality intended for DaimlerChrysler, Renault and the German manufacturers. C4: oil high quality for Renault Between others.

### Which mixture for 4-stroke engine?

In one motor to 4 stroke : Gasoline and oil are not in contact. Gasoline (the fuel) is mix to air (the oxidizer). Oil used only for lubrication is stored in the crankcase motor.

### What is the difference between 2-stroke and 4-stroke oil?

A 4 stroke oil will circulate from the crankcase to the engine components to be lubricated then return to the crankcase. L’oil therefore circulates without being burned. A 2 stroke oil will lubricate the engine components by being associated with the fuel (either by mixing with it, or by spraying during combustion.

### How to calculate the mass of oil?

We therefore convert the volume V into L: V = 33 cL = 0.33 L. We calculated then m: m = ρ × V = 0.920 × 0.33 ≈ 0.3 g.

### Why does oil float on the sea?

WHY OIL FLOATS ON WATER When we compare the masses of different substances of the same volume, what we are comparing is the density. The float oil on the surface of water, because its density is less than that of water.

### What is the weight of 100 mL of oil?

Volume (mL) -> mass (g) correspondence table

Liquids1 mL100mL
Oil olive0.91g91g
Oil sunflower0.92g92g
Water1g100 g

### What is API Density?

An article from Wikipedia, the free encyclopedia. API gravity is a scale that expresses the density of crude oil in degrees API (°API). API specific gravity provides neither more nor less information than specific gravity, and does not follow the SI unit standard, but allows numbers that may be easier to remember.

### What is the classification of motor oils?

The American Petroleum Institute (API) has established a classification of motor oils. This classification takes into account the composition of the oil and the resulting properties.

### How do you know if an oil is recent?

For example, SM or CF. The further the letter is in the alphabet, the newer the oil technology. For recent oil, the higher specification will override the lower letter grade.

### What are the benefits of motor oil?

G-4 from a performance point of view, these motor oils correspond approximately to the API SG level, but have a higher oxidation stability. In addition better protection against sludge formation and wear is required.