CHENNAI, India, May 23 (Reuters) - The Middle East crude market was steady on Thursday with most refiners having completed their procurement for the month and trading for July cargoes winding down, traders said.              *OSP     - Dubai has set its official differential to Oman futures for August at a discount of 5 cents per barrel, the Dubai Department of Petroleum Affairs said on Thursday. Dubai had set the OSP for July at parity.     The differential will be applied to the average of daily settlements for the front month August Oman contract to set Dubai's official selling price (OSP) for August-loading crude.                 *TENDERS         - India's MRPL has bought 600,000 barrels of Omani crude oil from Vitol at about $1 premium to Dubai quotes for lifting in the first half of July, two sources  said, as the refiner avoids Iranian oil due to western sanctions.     Mangalore Refinery and Petrochemicals Ltd (MRPL) has also bought about 600,000 barrels of Yemen's Marib Light crude form Unipec at 20 cents premium to dated Brent through a tender seeking supply of low sulphur oil, they said.  
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                       *MARKET NEWS     - The European Union has no plans to impose new duties on crude oil or diesel imports from Russia and the Middle East as it reviews its customs policy, officials said on Wednesday, alleviating market concerns.  
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       - India has agreed to pay 450 billion rupees ($8.1 billion) for the March quarter to state-owned fuel retailers as compensation for selling products at cheaper government-set rates, officials at these companies said.  
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       -  Singapore onshore middle distillates and fuel oil stocks slipped but light distillates stocks went up in the week to May 22, data from trade agency International Enterprise (IE) showed on Thursday.  
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              CRUDE ($/bbl)                        Price     Prev     Change  JUL DME Oman diff to Dubai swap         0.95     0.93    +0.02  JUL Brent   
  BRENTSGMc1
                 101.38   103.19    -1.81  JUL Dubai  
  DUBSGSWMc2
                   98.06    99.78    -1.72  JUL DME Oman                           99.01   100.71    -1.70  JUL Brent/Dubai EFS  
  DUB-EFS-1M
          3.32     3.41    -0.09                                                            PRODUCT CRACKS                                            JUN fuel oil crack  
  FO180SGCKMc1
       -5.88     -6.57    +0.69  JUN gasoil crack  
  GOSGCKMc1
            16.26     16.88    -0.62  JUL naphtha crack  
  NAFOBSGCKMc1
        -8.41     -9.27    +0.86                                                            COMPLEX REFINERY MARGINS  
  REF/MARGIN1
                      Today                                   7.36              Last 5 days                             6.09              Last 365 days                           7.43                       (Reporting by Ramya Venugopal and Nidhi Verma, editing by William Hardy)  ((ramya.venugopal@thomsonreuters.com)(+91 80562 88685)(Reuters Messaging: ramya.venugopal@thomsonreuters.com.reuters.net))  
 ((RECENT CRUDE OIL TRADES           Asia... 
  ACRU/T
        Europe... 
  CRU/T
       Americas... 
  CRU/TU
                                CRUDE OIL MARKET NEWS           Crude oil tenders in Asia................... 
  CRU/TENDA
           Crude oil supply outages in Asia............ 
  CRU/OUT-ASIA-O
             Refinery outages in Asia.................... 
  REF/OUT-ASIA-O
             Global arbitrage news and flows................. 
  O/CRUDEARB
             W.African crude imports to Asia,  monthly........ 
  O/WAFRICA1
                             REFINERY MAINTENANCE DIARIES           Asia... 
  REF/A
       Middle East... 
  REF/ME
      Europe... 
  REF/E
                                NATIONAL CRUDE IMPORT DATA           Japan.............. 
  METI/JP1
     China.............. 
  O/CHINA1
             India.............. 
  O/INDIA2
     S.Korea............ 
  O/KOREA1
             Indonesia....... 
  O/INDO1-CRU
                                   CRUDE OIL INVENTORY DATA           Japan... 
  O/JAPAN1
       US... 
  EIA/S
       Europe... 
  O/EUROIL1
                             CRUDE OIL PRODUCTION/OILFIELD NEWS           OPEC output survey... 
  OPEC/O
    New Asian  fields... 
  ASIA/NEW
             New Africa fields... 
  AFR/NEW
    New Americas  fields.. 
  AM/NEW
             New projects..... 
  ENERGY/NEW
                                CRUDE OIL MARKET REPORTS           Middle East........... 
  CRU/M
      Asia-Pacific........ 
  CRU/AP
             West Africa......... 
  CRU/WAF
     North  Sea............ 
  CRU/E
             Asia outlook....... 
  ASIA/CRU
     Europe  outlook..... 
  EUR/CRU
             Global futures report... 
  O/R
     Technicals  report...... 
  O/I
                                     PRICES           For all Official Selling  Prices...................... 
  OSP/O
             For a POLL on oil  prices............................ 
  O/POLL
             NYMEX and ICE oil  futures........................... 
  OILOIL
             TOCOM crude oil  futures............................. 
  0#JCO:
             Dubai, Oman swaps and  spread............... 
  ASIA/SWAP/CRUDE
             Middle East physical crude  diffs............... 
  CRUDE/ASIA2
             Australia physical crude, Tapis  swaps.......... 
  CRUDE/ASIA1
             Asia-Pacific physical  crude.................... 
  CRUDE/ASIA3
             All Asian crude oil  differentials................ 
  0#C-DIF-A
             All Asian crude oil outright  prices.................. 
  0#C-A
      ))  Keywords: MARKETS MIDEAST CRUDE/