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.

For a warehouse retailer famous for selling items in endless bulk, imposing strict purchasing limits is a massive red flag.

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 ...

For years, Costco’s Kirkland Signature full-synthetic motor oil has been one of those products that made DIY car maintenance ...

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

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

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

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

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