0W-8 engine oil: What cars use it and why is it so expensive?

One of the newer types of engine oil is 0W-8. Here are the cars that use it, how it is different from other oils, and why ...
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Mechanics say this small maintenance habit adds years to engine life

Ask a few mechanics what really keeps an engine alive past the 150,000-mile mark, and you’ll hear plenty of opinions. Some ...