Hello friend,
because from my experience, it seems that the shortest path is the curved line, since the air filter must be removed, in order to access the gasoil filter housing, in addition to loosening some brackets of the cables you find ahead, and so you can access the lower part, where the tank of water condensed in the filter is located, which you have to unscrew and release, to change the filter, to change the filter, to change the filter, to change the filtre. Vissez-le au nouveau filtre ... Total qui passe plus de temps à retirer et à mettre des pièces que à changer le filtre ... une réalisation dans la conception. Chance !!