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FAQ: Why Use Synthetic Oil?

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PostPosted: Mon Oct 02, 2006 4:31 pm    Post subject: FAQ: Why Use Synthetic Oil? Reply with quote

Hi all, some of us might dun understand why we need to use better oil, such as synthetic over normal mineral oil, here got the explanation from Castrol Malaysia website.

Synthetic lubricants are engineered to do the job of a conventional lubricant - but they do it much, much better. Think of them as bionic lubricants, if you will! Though a bit more costly to produce and, therefore, more expensive to buy, these "super lubricants" can actually save you money in the long run.
The primary function of motor oil is to provide lubrication between moving metal parts in the engine. The friction caused by these parts when they move together creates high levels of heat that cause damage unless a lubricant is introduced to the mechanism. A lubricant will smooth the surfaces and enable the parts to move freely against one another with reduced friction and, consequently, reduced wear and heat. This is a function that conventional motor oil can perform quite well but a synthetic can perform far better.
All lubricants fall into one of three categories: liquid (oil), semiliquid (grease), and solid (graphite). All three are derived from vegetable, mineral, or synthetic base stock. However, were these raw materials alone used to lubricate modern, high-precision machinery; they would quickly overheat, catch fire, evaporate or emulsify. To guard against this, all lubricants are doctored to a certain extent - processed to remove impurities and bolstered with chemical additives. Synthetic lubricants, however, are manufactured specifically to stand up to the severe conditions under which conventional oils might falter. They are designed to possess viscosity characteristics superior to those of mineral oils. The resulting lubricants have a molecular structure that is tailored to meet and often exceed manufacturers' criteria for high-performance engines.
Among the many performance advantages that synthetic lubricants offer is their ability to remain stable at high temperatures (under which conventional oils can begin to breakdown) and remain fluid at very low temperatures (under which conventional oils begin to thicken). This provides optimum lubrication at extreme temperatures, reduces wear and tear, and makes for a cleaner, more efficient engine. Synthetics are sometimes mixed with conventional oils to produce a cost-effective middle ground between the two, referred to as a "blend." However, while blends and conventional oils are both capable lubricants, there is no contest when it comes to which type of oil does the best job. For the highest level of engine protection, synthetics like Castrol Syntec come out on top every time.

Note: Personally I tested both semi and fully synthetic oil, if you want maximum performance and protection, should go for Fully Synthetic, Semi Synthetic still consists of mineral oil ingredients.
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