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 ...

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

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.

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

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

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.

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

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