The synthetic oil shortage is getting worse, with Costco now limiting sales of some brands. Which motor oils may be hard to find, and why.

The war with Iran is increasingly being felt by American motorists as disruptions to energy production and shipping tighten ...

Costco has raised the price of its Kirkland-brand motor oil and limited customers to two cases per week. A 10-quart case of Kirkland Signature full synthetic motor oil is now $58 on Costco’s website, ...

Costco Is Rationing Motor Oil — And the Numbers Tell a Grim Story for DIY Mechanics Walk into any Costco warehouse this week and head for the motor oil aisle, and you'll find something that has ratt ...

Kirkland synthetic motor oil now costs about $58 per case, while Costco restricts purchases as petroleum supply pressures ...

Motor oil just became the exception. The retailer has capped purchases of its Kirkland Signature full synthetic motor oil to ...

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

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

BREAKING: Costco is now rationing motor oil for the first time in history, limiting members to one transaction and a maximum of 2 units every 7 days on its Kirkland house-brand full-synthetic, which ...

Costco shoppers who buy the Kirkland Signature full-synthetic motor oil will now be paying more as the warehouse store has ...

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

Costco also sells Mobil 1 full synthetic motor oil. A six-pack of 1-quart bottles of 5W-30 was priced at $43.99 on Monday, with a limit of five per membership. Copyright 2026 Nexstar Media Inc. All ...