AMSOIL API diesel oil specifications. The American Petroleum Institute, or API, is the only national trade association that represents all aspects of America's oil and natural gas industry including production, refinement, … [Read more...]
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Motor Oil Testing with Turbo Charged Engines
Testing proves AMSOIL Signature Series 5W-30 Synthetic Motor Oil provides more complete protection against damaging deposits than its competitors. The push toward smaller, fuel-efficient, yet powerful engines has driven the development of several key technologies. Gasoline direct injection (GDI) and turbochargers are now common features of passenger cars and light trucks. By 2020, industry experts […]
How do dramatic temperature swings affect engine oil?
Big temperature swings are common in much of North America. In February 2011, the town of Nowata, Okla. saw a record low of -31ºF (-35ºC). Just a week later the temp climbed to 79ºF (26ºC). That’s a 110ºF (61ºC) swing in only a week. The underlying concern for motorists is that ambient temperature changes will […]