Product Details: Update your truck with a smooth running transmission, with the Lucas Oil 75W-140 Synthetic Blend Gear Oil that ensures you're Ready for the Road Ahead™. Due to its viscous body, this lubricating oil allows the components of the transmission, differential, and transaxle to gently glide across one another without wearing down or shearing. Developed to endure high temperatures and keep your engine at its best while reducing the need to change or repair gears. FleetPride is your First Click in Heavy Duty®.