An explosion at Irving Oil's Saint John refinery in New Brunswick failed to buoy markets, and last week's price correction extended into US midmorning trading on Monday.
Product futures had moved briefly higher in the wake of reports of an explosion and fire at Irving's Saint John refinery. The facility is a major supplier of gasoline for eastern Canada and New England.
The refinery was already down for seasonal maintenance when the explosion took place, limiting the immediate impact on crude and product flows.
Prompt RBOB traded as high as at $2.0928/gal and ULSD reached $2.3821/gal immediately following the incident, but later ULSD prices moved lower and RBOB was hovering around even.
Ample gasoline inventories would also mitigate the upside price risk from any potential supply shock. Atlantic Coast stocks increased to 69.26 million barrels during the week ended September 28, according to US Energy Information Administration data. East Coast inventories are now at their highest level since May 2017 and are more than 7.18 million barrels above the five-year average.
Crude futures moved lower on Monday, with ICE December Brent down 48 cents at $83.68/b and NYMEX November WTI 26 cents lower at $74.08/b.
Signs that Iran may continue to export some crude after US sanctions take effect next month weighed on crude prices. Last week, Indian refiners said they will import at least 9 million barrels of crude from Iran in November, defying US calls for a complete cessation of Iranian exports. India was the second largest buyer of Iranian crude in September, data from cFlow, S&P Global Platts trade flow software, showed.
Washington has exerted significant pressure on buyers of Iranian crude in recent weeks, but on Friday officials suggested they may be open to issuing sanctions waivers.
"Reports of US waivers for sanctions brought the market under selling pressure initially, but it doesn't seem to have lasted," Tradition Energy analyst Gene McGillian said.
Earlier on Monday, Brent futures dipped as low as $82.66/b and WTI was trading down to $73.34/b.