Brent crude futures were up 77 cents at $112.11 a barrel by 0857 GMT, gaining for a second day.
U.S. crude rose $1.81 a barrel to $100.51. There was no settlement price for the benchmark on Monday because of a U.S. holiday.
Analysts and traders said China's 8.9 percent fourth-quarter GDP growth had helped lift commodities and equities.
Although the growth figure was the weakest in two and a half years, it was still better than a forecast of 8.7 percent made by economists in a Reuters poll.
But China's implied oil demand climbed to an all-time high of 9.64 million barrels per day in December, up 0.4 percent from a year earlier, and finished 2011 with 6.8 percent growth.
KEEP BUYING WALWART!!!!!!
Attachments: