SMOIL SAE 25W-60 Synthetic Blend | GallonBorn from the collaboration between Steve Morris Engines and Driven Racing Oil, SMOIL is a purpose built race engine oil designed to protect and perform under the most brutal conditions. SMOIL SAE 25W 60 viscosity is intended for applications with large bearing clearances. Formulated specifically for boosted and high horsepower engines, SMOIL delivers uncompromising lubrication and thermal stability for engines running on methanol, ethanol, and race