Costco has increased the price of its Kirkland Signature full synthetic motor oil and implemented purchase limits for customers, citing rising oil prices and supply disruptions. The 10-quart case of Kirkland Signature full synthetic motor oil is now priced at $58, up from the previous range of $30 to $35 over the past several years. Customers are now restricted to buying two cases per week, as stated on Costco's website. Additionally, Costco has set a limit of five per membership for the Mobil 1 full-synthetic motor oil six-pack, which is currently listed at about $44 [1].
The synthetic motor oil market relies heavily on Group III base oils, which are refined from crude oil. Industry analysts note that a significant portion of these base oils used in the U.S. are imported from the Persian Gulf, where ongoing conflict has caused supply disruptions and tightened availability [1].
The price of Brent Crude oil exceeded $109 per barrel on Monday morning, a sharp increase from less than $72 in early July. This surge is attributed to the conflict in the Middle East, which has disrupted global oil shipments and created uncertainty about the restoration of normal oil flows through the Strait of Hormuz [1].
Rising crude oil prices have also pushed the national average price of regular gasoline to nearly $4.32 per gallon, up from $4.08 a month ago and $3.18 a year ago, according to AAA. Diesel prices have reached a new record, surpassing $6 per gallon on average, with the latest figure at $6.23 per gallon, up from $5.90 a week ago [1]. Prices for both diesel and regular gasoline generally track crude oil prices. It is currently unclear whether other motor oil retailers such as Walmart, Amazon, and AutoZone will follow Costco in raising prices or imposing purchase limits [1].
CONCLUSION
Costco's decision to raise motor oil prices and limit purchases reflects the significant impact of rising crude oil prices and supply disruptions from the Middle East. With fuel and motor oil costs climbing sharply, the market faces heightened uncertainty, and it remains to be seen if other retailers will implement similar measures.