Synthetic blend motor oil is more effective than regular oil because it lasts longer and can withstand higher temperatures without breaking down. Synthetic motor oils can improve vehicle horsepower and efficiency because they produce less resistance in an engine than regular motor oils.
Synthetic motor oils are engineered and perform efficiently without any of the contaminants that can be found in conventional motor oils. Motor oil contaminants can build up in isolated areas of the engine and later cause damage by clogging oil pathways and valves and decreasing the overall life of an engine. The effectiveness of synthetic motor oil can also be seen in its higher viscosity, allowing it to burn at high temperatures without vaporizing as quickly as regular oil.
The high heat of an internal combustion engine can burn off up to 20 percent of a petroleum-based oil’s mass, but only 4 to 10 percent of a synthetic oil's mass. This makes synthetic oil more effective on long-distance drives, which can really heat up an engine.
Using a synthetic motor oil can save time and the environment, since regular motor oil needs to be changed three times more often than synthetic oil. Some brands of synthetic motor oils can last up to 20,000 miles between oil changes. The initial cost of synthetic oil is higher than regular oil, but the expense evens out due to less frequent oil changes. Synthetic motor oil can also clean sludge deposits in the engine, improve gas mileage and provide better cold-weather starts than regular oil.