	amoco an raises  prices amoco corp said it raised the contract price it will pay for most grades of  oil by cts a barrel effective today the company said the increase brings its posting for west texas intermediate to dlrs a barrel west texas sour at degrees api was raised to dlrs the light louisiana sweet grade was also increased cts to dlrs a barrel amoco said wyoming southwest sweet colorado western and two utah grades of oil black wax and yellow wax were unchanged the company last changed its  oil postings on september reuter 
