Heating Oil

Heating oil is a common petroleum refinement product. It is brown.

Obtention
Naphtha processing results in 400mb of Heating oil.

Industrial Oil processing results in 600mb of Heating oil.

Coal can be liquefied into it. It requires 800mb of heating oil and 2000mb of steam to make 1800mb of heating oil.

Uses
It has the highest solidification efficiency of any petroleum product at 100mb per operation (for 2 solid fuel).

The primary use for heating oil is to make Cordite: a smokeless gunpowder used in many bullet recipes. 200mb of heating oil, 1 set of oak wood planks, 2 Niter, and 1 sugar makes 4 pieces of cordite.

Can be used as a weak but decent fuel for the Radial Performance Engine.

Trivia

 * In real life, it is chemically very similar to Diesel fuels, if not simply just dyed diesel (usually red).
 * While it would work in a diesel engine, it is illegal to use it as it is not road taxed.