The trade war between the world's two biggest economies has weighed heavily on global trade, sparking concerns of an economic slowdown.
Crude oil has not been included in the list of products facing import tariffs, but traders said the positive sentiment of the truce was also driving crude markets.
Oil also received support from an announcement by the Canadian province of Alberta that it would force producers to cut output by 8.7 percent, or 325,000 barrels per day (bpd), to deal with a pipeline bottleneck that has led to crude building up in storage.
"From Argentina to Alberta, the oil market news is about supply curtailments," said Norbert Rücker, head of commodity research at Swiss bank Julius Baer. "A brightening market mood will likely extend today's price rally in the very near term."
OPEC meets on Dec. 6 to decide output policy. The group, along with non-OPEC member Russia, is expected to announce cuts aimed at reining in a production surplus that has pulled down crude prices by around a third since October.
"Markets are expecting to see a substantial production cut after Russian President Vladimir Putin said his country's cooperation on oil supplies with Saudi Arabia would continue," said Hussein Sayed, chief market strategist at brokerage FXTM.