On the truck cab between the cab base and frame will allow a lot of air up into the cab while driving. Of particular concern for me is the cab area below the seat belt, behind the doors at the cab base and frame. The area below the door and front simple silicon chalking will work.
Looking for suggestions to fill and block the outside air from entering the cab.
For those that didn't run the exhaust out the back and dumped the exhaust out under the cab (per the instructions I might add) this is a serious health issue and a clear safety issue that allows the exhaust to enter the cab.
Anyway... any ideas most welcome.
Thx Mark