As refiners now make more money turning crude oil into petrol, motor oil could face a significant supply squeeze.

The wholesale retailer has raised the price of a 10-quart case of Kirkland Signature full-synthetic oil from around $30 to ...

Here's why Costco Wholesale increased the price of its motor oil products.

Costco is limiting sales of its house brand motor oil to two units per customer per week amid rising oil prices.

Costco is now capping Kirkland and Mobil 1 motor oil purchases each week as oil prices soar, gas hits $4.32 and diesel ...

A 10-quart case that cost roughly $30 now runs $57.99, with purchases capped at two units per member per week.

Costco's price hikes are part of a broader increase amid the ongoing Iran War conflict, with higher costs increasingly being ...

Costco is rationing its Kirkland Signature motor oil as a global shortage of a key ingredient used in synthetic lubricants ...

Costco increased the price of synthetic motor oil by about $30, and set a purchasing limit as Iran war continues.

Two 5-quart bottles of Kirkland's fully synthetic 5W-30 motor oil now cost $57.99, with buyers limited to one purchase per ...

Costco raised the price of its Kirkland Signature 2-pack full-synthetic motor oil by about $30, and placed a weekly ...

Costco has raised the price of motor oil sold under its exclusive private-label brand as well as limited how much of it ...