To counter this impact, some cars Possess a torque converter using a lockup clutch. Once the two halves from the torque converter get up to speed, this clutch locks them alongside one another, making certain which the motor and gearbox spin at the same pace and reducing ability reduction. From https://torque-converter-clutch52738.bloggadores.com/33433668/the-2-minute-rule-for-torque-converter-clutch