At least three tankers were booked in recent days to take gasoline from Europe on transatlantic journeys, shipping data showed.
Gasoline stocks held in independent storage in the Amsterdam-Rotterdam-Antwerp (ARA) refining and storage hub rose 12pc in the week to Thursday, data from Dutch consultancy Insights Global showed.
The Philadelphia Energy Solutions refinery, the oldest and largest on the US East Coast, is expected to shut its remaining units on Monday as the plant uses up the last of its crude supplies, sources said.
European refineries produced 5.7pc fewer oil products in June on a year-on-year basis at a rate of 10.196 million barrels per day, data from Euroilstock showed on Friday.
Output was 1.2pc lower than in May.
Water levels along the Rhine river, a key waterway for transporting commodities and other products to inland locations from ARA, fell to around 172 cm at the Kaub point, the lowest since May 10.
A crude distillation unit at Germany's Schwedt refinery returned to operation after a brief shutdown, according to Genscape.