Synergy is Royal Purple's best selling EP gear oil and is designed to smoothly lubricate industrial gears under virtually all conditions. Synergy is an ultra-tough, long life, gear oil with slippery, synthetic molecules, which greatly increase its lubricity and oiliness properties. Gears run smoother, quieter, cooler and longer without overhauls. Synergy is non-corrosive to both ferrous and nonferrous metals. Its ability to rapidly and completely separate from water prevents sludge and wear commonly found in wet gear boxes. Synergy employs a dense, high molecular weight, synthetic cushioning additive to prevent fatigue failure in gears subjected to sudden shock loads.