Kirkland Signature · Auto
Who makes each Kirkland Signature Auto product?
3 Auto products researched and graded — from confirmed makers with archived citations to honest unknowns where no reliable public evidence identifies the maker.
Auto Automotive Battery (lead-acid; discontinued, replaced by Interstate) Unknown Maker not established Auto Gasoline (Regular 87 / Premium 91, sold at Costco fuel stations) Unknown Maker not established Auto Motor Oil (Full Synthetic 0W-20, 5W-20, 5W-30) Confirmed Made by Highline Warren (formerly Warren Distribution)