US Gulf Coast cracking margins jumped across the board last week, led by West Texas Sour, Bakken and Louisiana Light Sweet, a Platts analysis showed Monday. Margins strengthened on a combination of higher netbacks and lower operating costs as USGC gasoline prices soared amid lower crude differentials. USGC cracking margins for WTS averaged $15.88/barrel last week, up $5.58/b. LLS jumped $5.38/b to $15.74/b, while Bakken margins rose $3.92/b to average $14.54/b. Article continues below…