* OPEC seen keeping output targets steady at Wednesday talks
* Stock market rally, weaker dollar help lifts prices
* Coming Up: Fed benchmark rate decision at 1815 GMT
* Coming Up: American Petroleum Institute report at 2030 GMT
(Updates prices, recasts)
By Emma Farge
LONDON, March 16 (Reuters) - Oil rose above $80 a barrel on Tuesday as equities rallied but gains were capped by caution ahead of an OPEC meeting and expected monetary policy moves from the world's top two oil consumers, the United States and China.
U.S. crude prices for April <CLc1> rose $1.14 to $80.94 a barrel by 1315 GMT, after earlier touching a low of $79.32 a barrel. ICE Brent futures <LC0c1> rose $1.02 to $78.91.
Rallying world stocks helped boost oil on Tuesday and they climbed by 0.3 percent on Tuesday, with the pan-European FTSEurofirst 300 <
> gaining 0.7 percent. [ ]A dip in the dollar also supported oil, making it cheaper for non-dollar buyers. [
]"Equities are up and they do seem to be closely linked to oil at the moment," said oil trader Tony Machacek at Bache Financial, adding expectations for further falls in crude and oil products held in storage are also supporting prices.
Oil prices slid nearly 2 percent on Monday, falling below $80 a barrel for the first time since March 4 on fears that a 16-month high in consumer inflation in China might lead to further tightening as early as this week.
China has already tightened reserve requirements twice ithis year, with each move hitting commodity markets worried about demand growth.
The U.S. Federal Reserve is expected to maintain interest rates near zero and pledge to keep rates low for an extended period later today, in a move that could boost long-term demand prospects.
But, for some, positive comments from the Fed could boost the dollar and weigh on oil.
"Tuesday may shape up to be another down day for energy, since participants may not want to get too long ahead of the Fed announcement later in the day," said MF Global analyst Edward Meir.
SUPPLY OUTLOOK
OPEC is expected to keep output unchanged in its Wednesday meeting in Vienna, with Saudi Arabia's oil minister saying the producers' group may not need to adjust output policy this year if the oil market remains stable. [
]"The market is in balance, the price is great, inventories are coming down so why should we do anything?" Ali al-Naimi said on Monday, echoing comments from OPEC members Iran and Qatar.
The oil market is getting tighter, Saudi Oil Minister Ali al-Naimi said on Tuesday and this also helped lift sentiment during the day. [
]"We have been sailing very well and will continue to sail very well," Naimi, minister for the world's top oil producer told reporters a day ahead of the Vienna meeting on Wednesday.
A report from the American Petroleum Institute due at 2030 GMT on Tuesday will provide an update on U.S. inventories and is expected to show that crude stocks rose for the seventh straight session last week.
The average forecast showed a 900,000 barrel increase in crude supplies, according to a preliminary Reuters poll of analysts. [
]Weekly U.S. chain store sales due at 1145 GMT and U.S. retail sales at 1255 GMT could also steer the market later on Tuesday, analysts said.
The threat of future attacks on the oil industry in Nigeria may be supporting oil after militants detonated two car bombs outside a government building on Monday. [
] (Additional reporting by Michael Urquhart in Singapore; editing by James Jukwey)