The 2018 Campeonato Ecuatoriano de Fútbol Serie A (officially known as the Campeonato Ecuatoriano - Copa Lubricantes Havoline 2018 for sponsorship reasons)[1] was the 60th season of the Serie A, Ecuador's top tier football league.
Clan Juvenil and Fuerza Amarilla were relegated from the Serie A after accumulating the fewest points during the 2017 season.
They were replaced by Técnico Universitario and Aucas, the 2017 Serie B winner and runner-up, respectively.
The winners were the Serie A champions and earned the Ecuador 1 berth in the 2019 Copa Libertadores, and the losers were the Serie A runners-up and earned the Ecuador 2 berth in the 2019 Copa Libertadores.
By having the greater number of points in the aggregate table, LDU Quito played the second leg at home.