Costco sells house-brand motor oil under the Kirkland Signature label it uses for many other products. Does this oil pass the ...

While we, and others, rate Costco's Kirkland Signature extra virgin olive oil highly, there is one problem associated with it that you should know about.

For the surprisingly affordable price, customers might wonder who actually makes Costco's Kirkland brand motor oil and whether the product is any good.

Costco said in its fourth quarter earnings call that the company has cut prices on some of its private label Kirkland Signature items.

Costco is cutting the prices of numerous Kirkland Signature items despite recently increasing its membership fees for the first time in seven years.

Costco Is Recalling 10,800 Units of Its Kirkland Signature Pasture-Raised Eggs Over Salmonella Concerns The eggs, which came in 24-count boxes and weren't meant to be sold in stores, "were instead ...