[font size="1" color="#FF0000"]LAST EDITED ON 22-Sep-00 AT 11:30 PM (EST)[/font][p]I have been hearing alot about the head gaskets and how it seems they are so sensitive.
My 86 6.9 w/120k on it that I bought a few weeks ago has really dirty coolant and I want to change it soon.
Is there any reason to worry about affecting the head gasket with a flush and fill and is there a coolant brand or additive that will help keep the head gasket in good shape.

I feel as though the DIRT may be holding it together.

Thanks.......AlanT

 

I really dont think that the dirt is holding your engine gaskets together, as these motors have up to 300 plus pounds of compression. I would defently flush the system out very good, I would remove the thermostat and flush out the block and replace the thermostat with one from ford or international. Use a good quality coolant with low-silicate formula for use in diesel engines. International sells Fleetright and add the DCA-4 additive as required.

Dave

http://a2ztowing.homestead.com/a2ztowing.html

 

I was kidding about the dirt.

But thanks for the info on the coolant.

I just changed out the stat and hope i can flush it out without tearing it out agian.

Thanks......AlanT

 

I was kidding about the dirt.

But thanks for the info on the coolant.

I just changed out the stat and hope i can flush it out without tearing it out agian.

Thanks......AlanT