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Home » Amsoil News » Are all Synthetic Oil Groups the Same? Group III vs IV vs V

Are all Synthetic Oil Groups the Same? Group III vs IV vs V

The simple answer No. In fact, there are wide performance differences between base oil categories. Generally speaking, Group IV base oils offer the best performance, Group III second best, and so on in reverse order. But be forewarned – there are exceptions. And, you can’t judge motor oil performance solely on base oil type. You

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