https://www.dieseltruckresource.com/...d.php?t=229112this is the post that I thought was great.

instead of hose could you use the compression fittings for copper pipe and never worry about it leaking.

My heater is not working well and I have flushed it back and forth. 230k miles

Plus, what is the part number for the heater core, or who would you get it from?


thanks for your in put.
mark

 

I now understand that there is just not room to work these fittings down tight.

I added to the other post my findings and how I did it. pictures also.

 

IF YOU ARE WORRIED THE HOSE WILL LEAK USE PERMATEX AVIATION sealer on the pipes, i have never had a hose leak with this have even fixed hose and fitting leaks with it, comes in a bottle with a brush, do not get it on anything else it is a mess like tar or indian head shellac (sp?)