Costco Starts Rationing Motor Oil. What It Means for Drivers

Photo: Costco Wholesale store in Fredericksburg, Virginia. Anchored at the Spotsylvania Towne Centre – May 26, 2025. Photo credit: Aaron F. Stone via Wikimedia Commons. CC BY-SA 2.0 Generic. Article by Giulia Carbonaro. Newsweek – updated September 15, 2026.

Costco has started limiting purchases of some motor oils after sharply raising the price of its Kirkland Signature synthetic product, as a shortage of a key lubricant ingredient pushes costs higher through the supply chain. For drivers, the immediate effect is likely to be higher prices and fewer low-cost options rather than motor oil disappearing altogether. Certain synthetic products could become harder to find if the shortage persists, making it more important for motorists to check availability before an oil change and buy the specification required for their vehicle. […]

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