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Costco Limits Kirkland Synthetic Oil Purchases Amid Iran-War Energy Crunch

Costco has capped members to two packs of its Kirkland 5W-30 synthetic oil every week as the Iran conflict drives up energy costs.

Costco announced a new purchase limit on its Kirkland Signature 5W-30 full-synthetic motor oil, allowing members only two two-pack cases of five-quart bottles within any seven-day window. The price of a ten-quart package has risen to $58 from as low as $30. The rationing comes as the Iran war has tightened global oil supplies, pushing U.S. gasoline to about $4.31 per gallon and diesel to $6.23 per gallon, while a Brown University energy-cost tracker estimates the conflict has added over $100 billion in extra fuel expenses nationwide, averaging more than $750 per household.

A California attorney warned the move could hint at deeper supply chain issues, and a recent poll showed most Americans oppose the war’s costs. Costco has not explained the policy, and the retailer was contacted for comment.

Why it matters

It shows how geopolitical conflict can quickly tighten consumer goods supply and raise everyday costs.

In this story

CostcoKirkland motor oilIran wargasoline priceshousehold energy costsupply chain rationingsynthetic oilfuel price surgeBrown University trackerconsumer impact
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