Built between 1945 and 1946 for water transport between stations, these forty-eight tank cars were eventually adapted for transporting diesel fuel for diesel locomotives. In 1988, the Rfv 304.910 was assigned to the Beasain station as a fuel reserve for shunting locomotives, a task it maintained until the 1990s, when it was abandoned.
In 2023, the FPPFI requested it from ADIF, which transferred it to the Mora la Nova Museum the following year. In October 2024, it arrived at the Museum and immediately underwent a complete functional restoration, becoming part of the collection of preserved vehicles.
Technical data sheet
| Any construction | 1945-1946 |
| Constructor | Heirs of Ramón Múgica |
| Series | Rfv.304.901 to 304.948 |
| Company | RENFE |
| Track width (mm) | 1.668 |
| Axis layout | 2 Axes |
| Length (mm) | 7.700 |
| Height (mm) | 3.710 |
| Width (mm) | 2.850 |
| Weight (kg) | 12.160 |
Client: FPPFI
Restoration Types: Functional
Any: 2024
