Premium Petroleum-Based Engine Oil by Spectro. Spectro 4 is the ultimate petroleum motor lubricant formulated specifically for use in high performance engines. It combines highest quality petroleum base oils and superior anti-wear additives to provide exceptional lubrication and protection for motorcycles. Exceptionally high anti-wear additive treatment reduces wear Extends component life Tremendous lubrication protection in extreme heat conditions Provides smoother shifting Exceeds all known motorcycle manufacturer’s warranty requirements Meets API SL / JASO MA / MA2 Please note: Spectro 4ml (eg 10w40) has a viscosity improver in them Spectro 4 engine lubricant Tech Sheet 2015 Spectro 4 engine lubricant MSDS Sheet 2015