Fully synthetic oil What are the benefits-Iota

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Service > Fully synthetic oil What are the benefits

Fully synthetic oil What are the benefits

First, the advantages of synthetic oils

Synthetic oil is a compound produced by chemical synthesis into higher molecular, and then after the deployment or further processed oil. It includes synthetic esters, poly-α- olefins, polyethers, silicone oil, its composition and different petroleum hydrocarbons. It refers to a semi-synthetic lubricants synthetic oil with mineral oil made by mixing. Because synthetic raw materials expensive, complex synthesis, high investment, synthetic and semi-synthetic oil prices are generally higher than mineral oil.

Synthetic and mineral-based lubricants compared with the following excellent features.

(1) excellent viscosity-temperature and low-temperature fluidity

Synthetic oil high viscosity index than mineral oils, Chang lung colonization at pull-plated guitar viscosity with the help of the monks burst temperature change is small. At the same temperature viscosity, pour point than most synthetic (or pour point) lower mineral oil, low viscosity small. The same film requirements, low viscosity synthetic oil can be used can be formed, the purpose to protect the engine. Therefore, it can reduce vehicle energy consumption at cold start, extend battery life; at the same time, due to the friction of oil to the surface needs a short time, can reduce engine part that appears when you start doing wear, extending engine life.

(2) high-temperature oxidation resistance

Thermal oxidation stability is much higher than mineral oil synthetic oil is good, that is due to oxidation and acid quality, small sludge trend in a variety of adverse operating conditions, the engine can provide proper lubrication and effective protection, thus has a longer service life, ensure the stability of long-term use of oil performance period.

In the same work environment, synthetic oil because life much longer than mineral oil, so although the cost is higher, but after relatively oil changes, not much higher than mineral oil.

(3) low evaporation loss

Typically is a pure synthetic compound, a narrower boiling range, much higher than its evaporation loss of low mineral oil, can reduce fuel consumption, reduce emissions and extend the life of catalytic converters.

In addition, compared with conventional mineral oil based oil, synthetic oil also has excellent chemical stability, radiation resistance and high film strength and low foam characteristics. Therefore, the general high-end cars are choosing synthetic oil.

Second, how to distinguish between full-synthetic, semi-synthetic and mineral oil

Since synthetic oil, semi-synthetic mineral oil relatively high, some unscrupulous traders to sell synthetic mineral oil marked as to deceive the user, in order to reap high profits. How to distinguish these oils to avoid being taken? The best way is by means of scientific instruments, the oil can be analyzed by infrared spectroscopy, the structure of the instrument, in order to distinguish what type of lubricating oil. The lack of analytical tools for ordinary users, can also be used to identify the following method:

① If you are esters full synthetic oil, it is advisable some oil sample is mixed with ordinary mineral oil, because it is not miscible with mineral oil, stirring after showing turbid state, delamination after standing for some time, or not really ester oils .

② If the poly-α- olefin synthetic oil, it is miscible with mineral oil, but its high viscosity index, usually more than 140, and does not contain wax, pour point electrode 2, usually at -40 ℃, measured When the temperature dropped to -30 ℃ pour point oil can maintain clear and transparent. If paraffinic mineral oil, viscosity index is relatively high, but high pour point, pour point measured the temperature dropped to -30 ℃ oil was opaque state; if it is naphthenic mineral oil, viscosity index is low, usually less than 80, the same as other states.

Since the semi-synthetic oils are generally made of poly α- olefin oil and paraffinic mineral oil by mixing together, in addition to the aid of instrumental analysis, there is no better way.

Third, change considerations when using synthetic oil

Synthetic oils generally refers to poly α- olefin (PAO) of the lubricating base oil, which is a pure substance, and miscible with mineral oil. Synthetic long span ambient temperature adaptability and good features greatly extend drain intervals, as more and more users favor. However, since the base oil PAO poor solubility of additives, and therefore usually added to an ester (usually diesters and / or polyhydric alcohol esters), as a base oil together. Additive dissolved ester oil, and ester oil and PAO can be miscible, so as to solve the problem in the synthetic additive solubility in. Similarly, PAO will seal rubber shrink, and ester oils will make the rubber expansion. Thus, when the two base oils coexistence, will offset the impact of rubber.

When a typical mineral oil based engine oil change is typical of synthetic oil will produce some problems. Film synthetic ester base oil as one of the components of outstanding natural clean role, it may be due to the use of mineral oil thermal oxidation decomposition formed inside the engine clean and clear, floating on the surface of lubricating oil. Substances such surfaces can clog filters and cause clogging of the oil supply shortage. Thus, in use for some time to mineral oil when the engine switch to synthetic oil, we must pay attention: oil change must be cleaned before lubrication system, and before starting the machine to double-check.

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