* Indonesia's Pertamina issued a tender for June-arriving
crude due to close on Thursday.
* India's IOC was also running a tender for June-arriving
oil set to close this week.
* Both refiners picked up several million barrels of West
African crude in their latest tenders and have been consistent
mainstays for demand as European buying has ebbed.
* Differentials for light sweet Nigerian crude have been
especially dented as Azeri and American crude has helped edge it
out of the European market.
* Qua Iboe crude was last heard offered at around dated
Brent plus $1.60 a barrel, traders said.
(Reporting by Noah Browning; Editing by Shilpi Majumdar)
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