Exhaust brake usage can lead to high temperatures in automatic transmissions due to torque converter slippage without a lockup device. Typically, only 10% to 80% of the retarding force transfers through most torque converters fluid coupling. BD Diesel s TorqLoc keeps the torque converter’s lock-up clutch engaged when the BD Exhaust Brake activates, enabling up to 100% of the retarding force transfer in 3rd and 4th gears. This minimizes transmission oil temperatures by reducing slippage in these gears, ensuring efficient and safe braking performance.