heater warm up ?

wanderingbob wrote:
Assume that the only issue was to get heat into the truck cab as soon as possible ! Would you start truck and get up to up to hiway RPMs and speed quick or would you maybe travel slower in a lower gear .
Highway speed RPM sounds good except that puts colder air across radiator and motor .
What do ya think ?

Make the engine work for fastest warm up. No need for full throttle but get it up on the highway for fast heat. If it still seems slow to warm check or replace the engine thermostat. The thermostat is made to fail open and can circulate coolant to the radiator when still cold.