The difference between semi-synthetic and mineral engine oil

The difference between semi-synthetic and mineral engine oil


Semi-synthetic oils
(from wiki)
Semi-synthetic oils (also called 'synthetic blends') are blends of mineral oil with no more than 30% synthetic oil. Designed to have many of the benefits of synthetic oil without matching the cost of pure synthetic oil. Motul introduced the first semi-synthetic motor oil in 1966.


Mineral oils are based on oil that comes from dear old Mother Earth which has been refined. Synthetic oils are entirely concocted by chemists wearing white lab coats in oil company laboratories. For more info, see the section on synthetics further down the page. The only other type is semi-synthetic, sometimes called premium, which is a blend of the two. It is safe to mix the different types, but it's wiser to switch completely to a new type rather than mixing.
(From car bible)


Mineral oil is cheapest
Standard motor oil is effective at protecting your engine. It’s also cheaper than semi-synthetic and synthetic oil. However, it must be changed more often, as it becomes dirty and thins out more quickly.


Semi-synthetic can be used more kilometer
For mineral engine oil can be used for 5,000 km, while semi-sythetic can be used for 8,000 km.


Semi-synthetic engine oil is more light than mineral engine oil.
Modern engines function well with lighter, thinner oils.