Penrite Motorcycle Fork Oil 10 is a fully synthetic, very high viscosity index fluid specially formulated using a combination of synthetic base oils, viscosity modifiers, anti-wear and extreme pressure additives. MC Fork Oil 10 offers wear and corrosion protection for suspension components while providing excellent low temperature properties and stable viscosity performance even during varied temperature operation. This Fork Oil is compatible with all seal materials and is safe to use with brass and copper alloy metals. Penrite MC Fork Oil 10 is recommended for use where a SAE grade 10W oil is to be used.