PRIMO® 100% Gold Performance Synthetic Oils are formulated with ZDDP for extended wear performance. Protects against sludge, corrosion. Excellent viscosity stability & thermal endurance. Maximizes fuel economy. Meets or exceeds current US performance requirements. PRIMO® Gasoline Engine Oils are specially formulated with highest quality base oils and additives to provide extended wear performance while protecting and cleaning critical engine parts. Synthetic oils will outperform conventional motor oils and allow for extended drain intervals.