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LPG: why automotive fuel is stored as a liquid

Publisher: ResumeMaker • 1 source

Published: 22 Oct 2026 13:13 · Updated: 22 Oct 2026 13:13

AI source check: 21 Oct 2026 10:06. This is not editorial approval.

In a few sentences

In brief

Propane can be stored liquefied under pressure. This is different from natural gas thickening.

Useful to know

AFDC describes propane for transport as fuel stored under pressure in liquid form. When the pressure is released, the liquid evaporates. In the American context, the names propane autogas and LPG are used.[1]

It is important to separate this principle from CNG, where mainly methane fuel is kept as compressed gas. The word "gas" by itself does not describe either the composition, or the tank, or the way of filing.

The source examines a specific propane composition for American automotive fuel. [1] We do not present it as an exact recipe for any LPG mixture on a European column.

Practically when buying a car with a gas system, check the exact type of fuel and the documentation of the equipment. The external presence of an additional tank is not a sufficient description. This text explains the difference between categories without giving instructions for processing, repairing, or working independently on a pressure system.

Sources

For further detail and to check the information:

  1. [1] AFDC — Propane Basics ↗