United Grease & Lubricants (UGL) is a holding company with subsidiaries that serve the lubrication needs of a variety of industries all over the world. Our innovative, top-quality products are designed to improve efficiency while making your processes simpler and more cost effective. A new transmission sold as an aftermarket part, yes, it adds value to your car. Because it is a new (as opposed to used) transmission and is not malfunctioning or broken. It might also improve the performance and fuel economy of your car. In some cases, aftermarket transmissions have been reported to decrease time for shifting gears, decelerate faster and increase fuel economy. However, when installed by a certified technician, new aftermarket transmissions have been known to fail quickly.