Pro:
Synthetic Lubricants help improve fuel milage and extend engine and transmission life. Amsoil developed the first 100% synthetic motor oil Standard oils last 3000 miles before they loose viscosity in 1972, for automobile use. Today many other companies offer synthetic motor oils, but none of them compare to the quality of Amsoil. Standard oils last 3000 miles before they loose viscosity but, Amsoil offers extended oil drain intervals, up to one year or 25,000 miles, reduces friction for increased fuel economy and less engine wear, but the two oils should not be combined. Synthetic oils improve cold weather starts, which relieves stress form your starter and battery. Save money and time with synthetic motor oil.
Synthetic oils are scientifically made so the viscosity remains better, to make engine run better, an API-rated 100 percent synthetic motor oil.
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Con:
1) Both, Synthetic
and Standard oils should not be mixed.
2) New oil has full viscosity at oil change.
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