SINGAPORE (Reuters) - PSO is seeking a total 249,500 tonnes of gasoline and jet fuel by tender, coming at a time when an ongoing French strike has boosted gasoline sentiment in Asia despite ample supplies, traders said on Tuesday. PSO is seeking a total 200,000 tonnes of 87-octane gasoline, or five cargoes for Nov 2010 to Jan 2011 delivery by tender. It is also seeking three 16,500-tonne jet fuel cargoes for Dec 2010-Jan 2011 delivery. The tender closes on Nov. 2, with offers to stay valid until Nov. 5. It had in late September bought a total of 160,000 tonnes of gasoline for fourth quarter delivery at premiums of $34.41-$45.41 a tonne to Middle East naphtha quotes on a cost-and-freight (C&F) basis.