* Financial traders add more crude long positions
* Market expects extended production cuts, though doubts loom (Adds Morgan Stanley OPEC-cut comment, updates prices)
SINGAPORE, Nov 20 (Reuters) - Oil markets were tepid on Monday as traders were reluctant to take on big new positions ahead of an OPEC meeting at the end of the month, when the producer club is expected to decide whether to continue output cuts aimed at propping up prices.
Brent crude futures, the international benchmark for oil prices, were at $62.60 per barrel at 0348 GMT, down 12 cents, or 0.2 percent, from their last close.
U.S. West Texas Intermediate (WTI) crude futures were at $56.63 a barrel, up 8 cents, or 0.1 percent, from their last settlement.
Traders said they were avoiding taking on large new positions due to uncertainty in markets.
The Organization of the Petroleum Exporting Countries (OPEC), together with a group of non-OPEC producers led by Russia, has been restraining output since the start of this year in a bid to end a global supply overhang and buoy prices.
The deal to curb output is due to expire in March 2018, but OPEC will meet on Nov. 30 to discuss the outlook for the policy.
OPEC is expected to agree a cut-extension as storage levels remain high despite recent drawdowns, although there are doubts about the willingness of some participants to continue to crimp production.
"(The) OPEC meeting remains the key sector catalyst into year-end ... The market expectation is for an extension through 2018, created by OPEC comments early this fall ... (but) there is increased risk that OPEC delays the extension decision," U.S. bank Morgan Stanley said on Monday in a note to clients.
Morgan Stanley said that the question over extended cuts "has shifted to non-OPEC participants' willingness to extend, primarily Russia."
Despite this, Greg McKenna of futures brokerage AxiTrader said it was "worth noting data showed more longs added by the speculative community," indicating expectations of rising prices. (Reporting by Henning Gloystein; Editing by Joseph Radford)