The Smart Blend Synthetics SAE 75W-140 LS Gear Oil is specially formulated to meet the requirements of performance cars, passenger cars, vans, sport utility vehicles, and light trucks. Smart Blend 75W-140 Synthetic LS is a thermally stable extreme pressure lubricant designed to perform at both extreme high and low temperatures. Smart Blend 75W-140 Synthetic LS Gear Oil is recommended for use in all standard and limited-slip hypoid differentials (conventional and high performance). The product meets the performance requirements of API Service GL-5 and provides lubrication and protection against wear and corrosion. The synthetic gear oil is compatible with conventional gear lubricants, says the company.