UNOCAL <UCL> RAISED CRUDE OIL POSTINGS BY 50 CTS/BBL Unocal said it raised its postings for crude oil by 50 cts a barrel, effective June 17. The company said it is now posting West Texas Intermediate and West Texas Sour at 19 dlrs a barrel. Unocal said its new Light Louisiana Sweet posted price is 19.35 dlrs a barrel. the price move follows a wave of increases initiated by Sun Co yesterday.