https://www.live-feeds.com/feed/costco-nearly-doubles-cost-of-motor-oil-limits-purchasesContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/costco-nearly-doubles-cost-of-motor-oil-limits-purchaseshttps://www.live-feeds.com/feed/costco-nearly-doubles-cost-of-motor-oil-limits-purchases#u69537Tue, 15 Sep 2026 23:20:54 +0000Costco has nearly doubled the price of its Kirkland Signature motor oil to $57.99 per 10-quart case, up from approximately $30. To manage stock, the retailer now caps purchases at two units per member per week. These changes affect the private-label full-synthetic oil, which is sold as a two-pack of 5-quart bottles. The price hike and rationing come as the company faces a supply squeeze and climbing oil costs.Why it mattersMotor oil is a high-volume staple for warehouse members. Sudden price spikes and rationing typically indicate broader supply chain instability or commodity market volatility