SINGAPORE, Sept 4 (Reuters) - Indonesia's Pertamina is seeking a total 600,000 barrels of 88-octane gasoline for September delivery via a spot tender, a trading source said on Tuesday.

The tender will close later on Tuesday.

Pertamina seeks one 200,000-barrel cargo for Sept. 13-15 loading from Singapore, another 200,000 barrels to be delivered to Jakarta during Sept. 23-25, and the same volume to be delivered
to Surabaya during Sept. 24-26.

If Pertamina awards the full amount, it will lift Indonesia's total gasoline imports to 4.864 million barrels, matching its August volumes of 4.8 million barrels.