The pump at like every station that has diesel says “diesel no. 2.” What is Diesel #2, and is there a Diesel #1 (or #3)?

Question

The pump at like every station that has diesel says “diesel no. 2.” What is Diesel #2, and is there a Diesel #1 (or #3)?

In: 646

Answer 1

Fuel specification ASTM D975 (for the US) lists 7 grades of diesel. No. 2 is for general purpose diesel engines with a maximum sulfur content of 15 parts per million