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

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

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

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

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

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

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

Costco stores increased price of synthetic motor oil by $30, and set a purchasing limit as Iran war continues. How many California locations affected?

As oil prices continue to rise, Costco puts the brakes on how much shoppers can stock up on.

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

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