Product Details: Get your truck Ready for the Road Ahead™ with a smooth running transmission, with the Lucas Oil 75W-90 Synthetic Blend Gear Oil. This lubricating oil allows the components of the transmission, differential, and transaxle to gently glide across one another without shearing or experiencing excessive wear. Engineered to withstand high temperatures and keep your engine running its best while reducing the need to change or repair gears. FleetPride is your First Click in Heavy Duty®.