Control Silk is an API SN, SAE 5W30 is a fully synthetic, premium quality engine oil. Silk is API registered gasoline engine oils which is designed to provide a high level of performance and protection under most operating conditions. The formulation of this oil consists of high-quality base oils blended with modern performance additives supporting longer engine life and avoiding delicate engine parts from lubricant induced seizure and failure for up to 8,000 kms or vehicle manufacturer’s recommended oil change interval, whichever is longer.