wrap heater hoses

[vlad]

To reduce heat loss from heater hoses between motor and cab,
wrap hoses with two layers household aluminum foil. Put foam pipe insulation over that. Secure with duct tape.

 

[north runner]

Most people just put cardboard in front of their radiators. Although trucks often have snap on/off covers. If you look in your engine comparment and see the fan turning when it -10F sucking air thru the radiator - you've got a problem, although many of the newer cars have thermostat controlled fans. I'd take care of that before insulating the hoses.

 

[Hamilton Felix]

Actually, a little insulation on the hoses sounds good for the rigs that have a LONG run to the heater. Our Suburban has front and rear heat & A/C. The rear heater core is a long way from the 454 up front.