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Get to the metro station ''Pajaritos.'' From there take a bus J12 to ''Ciudad de los Valles '' (you need a Bip! card to use buses, no cash or single tickets). The bus will go along the motorway 68 and there are three service stations on the way not far from each other, first Petrobras, then Copec and finally Shell. Petrobras is probably the best, with most tracks stopping there, also the bus stop is located a few hundred metres before the station so not much walking is required and it's the first bus stop after the motorway junction with Santiago Ring. The bus stop is called '''''Pasarela Pedro Jorquera'''''. You should be able to see the typical Petrobras green and yellow banner in the distance.