JG Japan Gold 20W-50 is a semi-synthetic engine oil engineered to deliver dependable high-temperature protection and long-life lubrication. Its 20W-50 viscosity provides stable film strength under load, helping reduce wear, control oil consumption, and maintain smooth performance for older/high-mileage engines, high-rev motorcycles and heavy-load vehicles. Ideal where 20W-50 is specified — offers improved thermal stability, reliable film retention and easier cold starts than straight mineral oils.