WAfrica Crude-Asian buying, force majeure supports

* Vitol wins IOC tender for January * Chevron declares FM at Kuito terminal GENEVA, Nov 2(Reuters) - Differentials on some Angolan grades firmed slightly on Friday, as traders eyed strong Asian demand and possible supply disruptions after the Kuito force majeure. U.S. oil major Chevron said on Friday that its Angolan subsidiary Cabinda Gulf Oil Company had declared force majeure at the Kuito offshore oil terminal on October 29 due to a fault with a mooring line. There was no im Read Full Story