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 ...

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 ...

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

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

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.

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

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

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