Specification Common Rating What It Means API (American Petroleum Institute) SN, SP Ensures basic performance and protection against wear, deposits, and oxidation. You will find certifications on the label indicating adherence to the API SN or SP ratings, as well as ILSAC GF-6 requirements for gasoline vehicles.
Inside Kirkland Oil’s Manufacturing Process and Additive Technology
Kirkland oil utilizes detergent and dispersant packages designed to resist sludge and maintain viscosity across a wide temperature range. Formulation and Additive Technology The base oil is sourced from Chevron’s network of refineries, but the true value lies in the additive package.
Costco’s Quality Control Costco maintains a reputation for strict vendor management. Knowing that the product is backed by the logistical might of Costco and the technical expertise of major lubricant suppliers offers confidence that your engine is cared for with ingredients that meet or exceed industry requirements.
Inside Kirkland Oil Manufacturing: From Refinery to Your Engine
ILSAC (International Lubricant Standardization and Approval Committee) GF-6 Focuses on fuel economy and compatibility with after-treatment devices. For drivers of European luxury brands, many formulations also meet ACEA specifications, providing high-temperature protection and fuel efficiency.
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