Crude prices eased from a more than one-month peak on Friday as profit-taking kicked in while focus shifts to the upcoming OPEC+ ministerial meeting on Sunday.
Both contracts hit their highest in more than a month on Thursday.
Front-month West Texas Intermediate futures were down 1.5% to $90.09 per barrel, while Brent futures declined 1% to $94.48/bbl, with both benchmarks headed for weekly gains.
Market participants are increasingly concerned that the recent recovery in oil transit through the Strait of Hormuz could reverse.
Commercial vessel traffic through the critical chokepoint remained subdued following a confirmed attack on a Saudi oil tanker during the preceding 48-hour reporting period by the UK Maritime Trade Operations.
ANZ analysts warned that while the market had largely priced in a peak in conflict disruptions, an extended crisis will keep flows constrained and threaten to extinguish recent upward price momentum.
Meanwhile, ahead of the upcoming OPEC+ ministerial gathering, Saudi Aramco announced it will hold its October official selling price for flagship Arab Light crude to Asia flat at a $2 per barrel discount to the Oman/Dubai average.
While Arab Light pricing remained unchanged, October OSPs for Arab Medium and Arab Heavy destined for Asia were each raised by $1 a barrel, whereas pricing for Northwest Europe and the Mediterranean was left untouched.
Tit-for-tat military exchanges escalated on the geopolitical front after reports indicated Iranian strikes targeted US bases in Kuwait and the UAE, prompting defensive interceptions by Kuwaiti authorities.