oil n water

[duke1947]

i have oil and water mixed in my cooler reservior. its gump can someone tell me where its coming from.

[a2elvis]

Is your truck a 6.0L?

[duke1947]

yes its a 6.0l .'05 f250

[a2elvis]

K then you have oil cooler failure.

Need to replace the oil cooler, egr cooler and anything rubber thats part of the cooling system. The oil cooler ruptures and fills the cooling system with oil. Very common problem with the Ford 6.0L.

[duke1947]

thanks alot have one to replace it can igt a cheap egr delete kit

[NYC F-350]

That would be the time to delete the egr cooler, if you wish to do so (and can get away with it).
The flush procedure to get the oil out of the cooling system is outlined in a Ford TSB.
Google Ford TSB 08-23-1

[duke1947]

how can i tell if my heads are cracked

[jesilvas]

Pulling em off and having a shop check them.
I think it's called magna fluxing?

[a2elvis]

Originally Posted by duke1947

how can i tell if my heads are cracked

Dont really need to worry about the heads right now. There is NO pressurized oil in the cylinder heads, so even if the heads were cracked it would not be the reason for oil in the cooling system.

[duke1947]

what if its diesel instead of oil and can i drive it 20 miles if the heads are cracked