A Cars Gearbox Oil is vital in keeping your transmission running smoothly and ensuring gears and other internal components are protected against wear and over heating. Making sure your gearbox is lubricated correctly also ensures it produces maximum efficiency and performance. Car gear oil is generally of a higher viscosity than engine oil and it’s vital you have the correct oil for your gearboxes specification, if you are in any doubt what oil is correct for your modified, race or unique vehicle get a custom recommendation from our expert team.