Engine Builders talk.
http://www.powerstroke.org/forum/gen...they-fail.html
I know this is for one specific aftermarket brand but this is off one of the powerstroke forums I've been reading up on
http://www.powerstroke.org/forum/gen...they-fail.html
Edit: oem for everything besides the exhaust manifold. Black onyx are for the head gaskets.
Last edited by fordmotorsport; Aug 11, 2014 at 08:34 AM.
That is a completley different animal. Those black onyx gaskets had a different thickness that couldnt handle the pressures of the diesel engine. Oem will be just fine for the f150.
Edit: oem for everything besides the exhaust manifold. Black onyx are for the head gaskets.





