SINGAPORE, May 30 (Reuters) - Margins for high sulphur fuel oil logged weekly declines in Asia amid sell-offs, while very low sulphur fuel oil (VLSFO) was largely rangebound, data showed on Friday.

Prompt-month cracks for 380-cst HSFO FO380BRTCKMc1 closed at premiums of about $2.25 a barrel, down 40% from the previous week. The cracks reached fresh highs near $4 a barrel earlier this month.

Trade sources said that HSFO cracks have pared from recent highs, but are still expected to retain strength into June amid seasonal drivers.

Meanwhile, VLSFO cracks LFO05SGBRTCMc1 closed at about $11.65 a barrel, showing a steady-to-softer trend from last week. Spot differentials eased for a fourth straight session.

More tenders continued to emerge in the spot market. India's IOC offered fuel oil cargoes for June loading, via a tender that closes early next week, based on industry sources.

OTHER NEWS

- Oil prices were on track for a second consecutive weekly decline on Friday, weighed down by expectations of another OPEC+ output hike in July and fresh uncertainty after the latest legal twist kept U.S. President Donald Trump's tariffs in place. O/R

- Ecuador's state oil producer Petroecuador on Thursday declared a 60-day emergency at the South American nation's largest oil refinery, its second emergency in one month, after a fire this week caused damage to some fuel tanks.

- The 650,000-barrel-per-day Dangote oil refinery in Nigeria is expected to operate its gasoline-making unit at reduced rates through October after a string of issues in recent months, industry monitor IIR Energy told Reuters.

- The White House is weighing a plan to clear a record backlog of requests from small refineries for exemptions from U.S. biofuel laws, which could include approving many current applications and requesting industry input to deal with older ones, according to three sources familiar with the plans.

WINDOW TRADES O/AS

- 180-cst HSFO: No trade

- 380-cst HSFO: No trade

- 0.5% VLSFO: No trade

ASSESSMENTS

FUEL OIL
CASH ($/T)	ASIA CLOSE	CHANGE	PREV CLOSE	RIC
Cargo - 0.5% VLSFO	481.35	-10.50	491.85	MFO05-SIN
Diff - 0.5% VLSFO	6.45	-1.30	7.75	MFO05-SIN-DIF
Cargo - 180cst	422.49	-14.17	436.66	FO180-SIN
Diff - 180cst	2.85	-0.15	3.00	FO180-SIN-DIF
Cargo - 380cst	420.56	-13.92	434.49	FO380-SIN
Diff - 380cst	6.75	-0.15	6.90	FO380-SIN-DIF
Bunker (Ex-wharf) Premium - 380cst	3.00	-1.00	4.00
Bunker (Ex-wharf) Premium - 0.5% VLSFO	10.00	0.00	10.00

For a list of derivatives prices, please refer to ENSWAP/INFO or the RICs below:
180cst M1	FO180SGSWMc1
180cst M1/M2	FO180SGSDMc1
380cst M1	FO380SGSWMc1
380cst M1/M2	FO380SGSDMc1
0.5% VLSFO M1	LFO05FSGMc1
0.5% VLSFO M1/M2	LFO05FSGSMc1
Cracks 180cst-Brent M1	FO180BRTCKMc1
Cracks 180cst-Dubai M1	FO180SGCKMc1
Cracks 380cst-Brent M1	FO380BRTCKMc1
Cracks 380cst-Dubai M1	FO380DUBCKMc1
Cracks 0.5% VLSFO-Brent M1	LFO05SGBRTCMc1
Cracks 0.5% VLSFO-Dubai M1	LFO05SGDUBCMc1
Visco 180cst/380cst M1	FOVISSGDFMc1
Hi-5 0.5% VLSFO/380cst M1	FO05-380SGMc1
GoFo 10PPM/0.5% VLSFO M1	GO10FO05FSGMc1
East-West M1	FOSGEWMc1
Barges M1	HFOFARAAMc1
Barges M1/M2	HFOFARAASMc1
Crack Barges-Brent M1	HFOFARAACMc1

(Reporting by Jeslyn Lerh; Editing by Maju Samuel)

((jeslyn.lerh@thomsonreuters.com))