This is a Castor Oil Additive from MerlinFuel. FEATURES: For Use With 2-Stroke and 4-Stroke Glow Engines. * Blends With Methanol and Nitromethane. * Ultimate In Lubrication Protection and Performance. * Fortified Film Strength and Anti-Scuff Protection. * Extreme Load-Carrying Capacity To Eliminate Engine Wear. * Clean-Burn Technology Reduces Carbon and Residue Build-Up. * De-Gummed Formula Reduces Ring Sticking.