In 1948 was renamed as Sindicatul Petrolist (Petroleum Syndicate), which later became the Partizanul Sovrom Petrol (1950), Flacăra (1952), Energia (1956), and from 1957 Petrolul Băicoi.

[5] Petrolul played in the following decade in Divizia C, and the best performances achieved were 6th place in the 1977–78 and 1980–81 championship editions, being coached during this period by Mihai Opatchi, Vasile Florea, Adrian Aelenei and Gheorghe Pahonțu.

[5] In the summer of 1989, F.E.H.S withdraw the financial support offered to and Petrolul enter in decline, relegating at the end of the 1989–90 season after finishing last in its series and continued to play for the next seventeen years on the first stage of the Prahova County Championship.

In the 2015–16 season, Petrolul, guided by Eugen Codreanu as player-coach, won the Liga V – Prahova County returning to fourth league after nine years of absence.

In the 2023–24 season, the team achieves its best performance, wins Liga IV Prahova and reaches the semi-finals of the cup, and obtains the right to play the promotion play-off in League III, a play-off that it wins against the representative of Giurgiu county, FC Bolintin Malu Spart 2017 with a score of 3-3 in the first leg at Bolintin Vale and 2-1 in the second leg at Băicoi.