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Costco Raises Motor Oil Prices to $58

By Markets Desk · 2026-09-15 · 2 min read
A single black oil pump jack stands isolated in a flat, sandy desert under a clear blue sky.
Illustration: Tradingbird

Costco has nearly doubled the price of its Kirkland Signature motor oil to $58 per two-pack while restricting weekly purchases to two boxes per customer.

The cost of the five-quart two-pack has jumped to approximately $58 from roughly $30 last year. Customers are now limited to buying two boxes per week. The retailer also capped Mobil 1 six-packs at five per membership, priced around $44. These changes follow a period where Costco lowered prices on other staple goods.

Patrick De Haan, head of petroleum analysis at GasBuddy, noted that these limits are reasonable for individual drivers. A standard vehicle requires four to five quarts every 5,000 miles. The purchase cap only affects those managing large fleets of vehicles. The move reflects broader market pressures rather than a supply shortage for consumers.

Geopolitical tensions drive crude costs

Brent crude prices exceeded $109 per barrel on Monday morning. This marks the highest level in months. Attacks on infrastructure in the Middle East and the Red Sea contribute to the rise. Ukrainian drone strikes on Russian refineries also factor into the price increase. The East-West Crude Oil Pipeline in Saudi Arabia is out of service for weeks following an attack last week.

According to GN auto markets/energy: crude oil prices, these disruptions affect all oil-derived products. De Haan stated that everything from a barrel of oil is impacted differently. Refined products like gasoline and diesel see direct price transmission. The volatility in crude costs forces retailers to adjust pricing strategies for downstream goods.

Gasoline and diesel prices surge

The national average for regular gasoline reached $4.31 per gallon on September 14. This is significantly higher than the $3.17 average from the same period last year. Diesel prices hit a record high of $6.23 per gallon on Monday. The diesel average was just under $3.70 per gallon a year ago.

Diesel and gasoline prices closely track crude oil movements. Oil companies profit more from refining crude into transport fuels than into motor oil. This economic incentive drives the prioritization of resource allocation. Consumers will likely feel sustained pressure at the pump during periods of geopolitical tension.

Retailers monitor market volatility

It remains to be seen if other retailers will follow Costco's lead. Walmart, Amazon, and AutoZone did not respond to requests for comment. These companies may consider similar price hikes or purchase limits. The current situation tests the resilience of supply chains against geopolitical shocks.

Based on reporting by wgntv.com, compiled by the Tradingbird desk.

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