SEE ALSO: What is Motor Oil? Z. George Zhang, Ph.D. and director of Valvoline Technical ... extra bucks at each oil change. Generally speaking, it’s safe to run synthetic oil in an older or ...

According to AAA, oil intervals may vary based ... 4Runners that use synthetic oil, it said, can go 7,500 to 10,000 miles without a fresh oil change, while 4Runners that use conventional oil ...

Among these tasks, oil ... and synthetic oils, regular oil maintenance has become even more crucial, despite longer service intervals. Common causes of engine smoke after an oil change include ...

Even though Organisation for Economic Cooperation and Development (OECD) countries are reducing their road transportation oil consumption on a per-vehicle basis, the growing automobile fleet in ...

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A basic oil change is one of the most important ... behind it has substantially improved. Synthetic oils ushered in the era of long service intervals. Still, engine oil maintenance is likely ...