NEW YORK, USA (AP) — Oil inched up Friday in light trading before the Memorial Day weekend.

Benchmark crude for July delivery added 36 cents to settle at US$100.59 per barrel on the New York Mercantile Exchange. In London, Brent crude fell two cents to US$115.03 per barrel on the ICE Futures Exchange.

Demand for oil and gasoline has been falling, and a Friday report on US consumer spending was weak. Still, analysts believe investors are cautious about selling ahead of a long holiday break. In February, oil prices shot up more than US$7 per barrel as the Libyan uprising escalated over the President’s Day weekend

Fighting continues in Libya and there are other anti-government protests throughout the oil-rich Middle East. In Syria, security forces opened fire on demonstrators Friday, and tribesmen in Yemen said they’d seized a Republican Guard military camp.

Energy experts say Libya’s 1.5 million barrels of daily oil exports will remain offline for at least several months. That loss continues to put pressure on other oil producers to make up the difference.

As world oil demand increases, Wall Street is betting that tightened supplies will inevitably push oil close to record levels.

Goldman Sachs said this week that West Texas Intermediate crude, the US benchmark, will hit US$135 per barrel by the end of 2012. Morgan Stanley said Brent will average US$120 per barrel this year, while JP Morgan thinks Brent will be US$130 per barrel in the third quarter.

Oil is down about 12 percent in May and WTI has recently traded in a range of US$97 to US$101. US pump prices, which tend to lag oil prices, dropped about three per cent and are now at US$3.80 per gallon. Tom Kloza, an analyst at Oil Price Information Services, expects gas to fall to between US$3.50 and US$3.60 in June.

But a rebound in price later this year, close to what in investment banks are forecasting, would put pressure on the global economy and squeeze drivers. At those levels for oil, gasoline will likely rise to around US$4.25 per gallon (US$1.12 a litre), Kloza said.

“That would hurt,” he said. “Gasoline prices are at the top of everyone’s mind right now.”

Consumer gasoline demand already has dropped during the past nine weeks as the national average approached US$4 per gallon.

“We’ve seen some real damage to the consumer’s psyche,” Kloza said.

The national average for gas has declined for 15 straight days to US$3.809 per gallon (US$1.05 a litre), according to auto club AAA, Wright Express and Oil Price Information Service. A gallon of regular unleaded is US$1.05 more expensive than the same time last year.

In other Nymex trading, heating oil for June delivery added nearly a penny to settle at US$3.0014 per gallon and gasoline futures for June delivery increased 2.39 cents to settle at US$3.0313 per gallon. Natural gas for July delivery increased 15.8 cents to settle at US$4.518 per 1,000 cubic feet.