US crude and condensate exports have notched up a string of records in key Asian markets with the inflow of Atlantic Basin volumes pressuring prices for competing Mideast grades in their core market. But shipments to China fell to precisely zero for August as the rhetoric mounted on a growing trade war.

China had usurped Canada as the top US export destination for the first seven months of 2018, taking 378,000 b/d (4.2% of China’s imports for the period), versus 347,000 b/d for...