UPDATE 1 — ExxonMobil signals $4.5 billion refining earnings boost as margins soar
(Adds details) By Sheila Dang Oct 16 (Reuters) — ExxonMobil signaled on Friday that higher refining margins during the third quarter could boost its downstream profit by $4.5 billion compared with the previous three months. Refining margins have soared due to the ongoing Iran war, which has restricted energy exports th