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Diesel Fuel Grades Explained: #1 vs #2 vs #4 (What You Should Actually Be Running)

Not all diesel fuel is the same.

Most people think diesel is just diesel – but in reality, there are different fuel grades, and each one behaves differently inside your engine.

The three main types you’ll hear about are:

  • #1 Diesel
  • #2 Diesel
  • #4 Diesel

Understanding the difference matters: because the wrong fuel choice can lead to poor performance, fuel system issues, or even downtime in extreme conditions.

Continue reading Diesel Fuel Grades Explained: #1 vs #2 vs #4 (What You Should Actually Be Running)