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A 5% biodiesel rating seems pretty typical nowadays, whether the pump is so-marked or not. We often don't have a choice.
The individual consumer and the market no longer make decisions for what is most efficient or desirable. It's the politicians who know best; to be more precise, the politicians know best after the campaign contributions come in. That's when they can clearly see what products need to be taxed, regulated, and otherwise modified to fit the lobbyists' specifications.
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