SynShield® High Mileage Performance Full Synthetic 5W-30 is a full synthetic oil that provides robust protection and durability to gasoline-fueled engines with 75,000+ miles. This oil is especially ideal for vehicle owners switching to Schaeffer’s Oil for improved engine performance.

SynShield® High Mileage Performance Full Synthetic 5W-30 meets and exceeds API SQ, ILSAC GF-7A.

It’s engineered with the finest quality of synthetic base oils, an advanced performance additive package and a viscosity index improver. This unique blend creates a premium, longer-lasting oil that provides reliable protection and durability throughout the engine's life.

Using proprietary friction modifiers, Micron Moly® and Penetro®, SynShield® High Mileage Performance Full Synthetic 5W-30 quickly plates to metal surfaces, creating a slippery, tenacious shield that prevents metal-to-metal contact. By reducing friction and wear, SynShield® High Mileage Performance Full Synthetic 5W-30 protects critical engine parts, thereby increasing engine efficiency, extending engine life and improving fuel economy.