I have a 05 F350 with a 6.0. It has 480,000 kms on it. The engine always has a smell of antifreeze from under the hood. No visible leaks except for the coolant bottle wet on it and below it from the cap. No matter what level I put it at and I do have to add coolant frequently. no white exhaust that I can see. just bluish from a bad ficm. The truck does have a EGR Delete on it. but the EGR valve is still in place as to not give the code. Inside the intake manifold when I take out the EGR Valve, it is all Oil. enough to get a piece of paper towel wet with the oil. My friend says its a head gasket but there in no oil in the coolant or coolant in the oil. I have to say its really confusing me. When you look at the visible head bolts they are just bolts, not studs. the person I purchased the truck from said all that stuff was done. but regardless weather it was or not I would really just like your insight to diagnose it please. Im at a loss and cant afford to get the work done by someone. it will be me. No mods other than the delete kit that im aware of. work and pleasure truck, haul skid steer sometimes. Changed degas bottle cap today. do not know if it helped. or what it would even help. .

 

Check your turbo, could leak around the shaft. How old is turbo? Are you using oil too? Little bit over time adds up in the system.

 

your pushing coolant out the cap?

 

You did the right thing by replacing the cap first, sometimes it is just that, keep monitoring the coolant level, it should only go to min line. Has the oil cooler evr been replaced? hopefully that was done when you had the EGR delete done. When a headgasket goes it won't bleed oil and coolant into each other, what happens is compression enters the coolant passage and it builds up so much pressure that the cap on degas bottle will pop and you loose coolant.

 

Thx for the Reply. what would be the best way to look? Remove and dismantle? or just remove the boot and pipe? I believe the turbo has 200,000 KMS at least. And yes my truck is using a lot of oil. not sure where its going thought, I am loosing more than what is visible in the intake manifold.

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Yes coolant is coming out the cap. lots if im towing the skid steer. but I have not tried towing since I put the new cap on.

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I am not certain if it ever has been changed. I have only had the truck a couple weeks. and this is the same state its been in since I brought it home. I have tried a kit from napa that you stick in the degas bottle and suck the air out threw a tube into a chamber with special fluid. if there is combustion gasses it will change colour. but no colour change yet.

 

well i agree it could just have been the cap, but pushing coolant is not a good sign at all for your head gasket

 

from reading this i would check your head gasket after you figure out the problem as to why your losing oil and coolant and they are mixing. typically with gasket they dont mix. but i for sure would check the gaskets either way