Blown head gaskets.

Are blown head gaskets common on the 5.7 fled fuel? I have a 12 crewmax and I am going thru way too much coolant. Nothing leaking. I think it’s a head gasket. Early stages of it I hope. 350,000 mile on it. Thoughts?

I’m also having miss fires all on the 3,5,7 side.

 

That coolant has to be going somewhere. What does your oil look like? Milky?

Also, any possibility it is leaking externally and burning off before making it to the ground?

 

The oil is fine. No signs of it being mixed in. And I don’t think so. Everything is dry underneath

 

They make a dye you can put in the coolant to make drips more visible. Ideally, you would put in dye, then pressure test the cooling system.

 

https://youtu.be/v0U8Iyf0kk4