John Deere Turf-Gard oil is a synthetic blend oil, which means it is made from a combination of synthetic and conventional base oils. Synthetic blend oils are designed to provide the benefits of synthetic oils, such as better temperature and wear protection, while still being more affordable than full synthetic oils. Turf-Gard oil is specifically formulated for use in John Deere lawn and garden equipment, including lawn tractors, zero-turn mowers, and walk-behind mowers. It is designed to provide excellent protection against wear and tear, even in extreme temperatures and high-load conditions, and to help extend the life of the equipment.