A 160 degree thermostat was fairly common on older vehicles, yours probably has one as well. It allowed the engine to warm up quicker and to keep from overheating while keeping the operating pressure lower. Most modern vehicles run a 195 thermostat to work with better with fuel injection as the fuel mixture is regulated by a computer and requires a consistent temperature.
As long as your truck is not running hot or having issues warming up I would recommend you stay with the thermostat that is currently installed.
Last edited by TUTS 59; 03/02/2023 1:31 PM.