Loss of coolant, coolant in engine oil, oil in coolant, engine sounds like a a thousand Englishmen are making tea under your hood. White smoke coming from exhaust, but this could be your egr system also. That should cover most, but with these things you just never know it all.

 

The most prominent signs for head gaskets is the coolant overflow puking(white residue around cap) and the tea kettle whistle.

 

I have oil around the head gaskets on my heads. Is that an early sign of failure? I was hoping to catch it before it happens. I still have 20,000 more miles on my warranty. Does that warranty cover an oil leak from the head gasket?

 

Yes it does any leaks of any kind on the engine they have to fix!!! The full Drivetrain is covered for 7 yrs 100,000 miles :thumb:

 

look for the service bulletin 6-21-2 coolant overflowing from degas bottle. in the 6.0 tech section

 

Go to autozone and do the Rent/Buy thing for a coolant pressure gauge, 6ft of 3/8 fuel line, a Tee and clamps, pull off one line of the degas bottle and Tee the 6 ft of hose in. I ran the 3/8 hose through the firewall where my aftermarket wires run, and connect the coolant gauge.

Drive for about about 20 miles on the thruway, and do WOT pulls from like 60-75mph, if the coolant gauge goes stays below 12 psi the Head gaskets at least combustion chamber to coolant sys are fine. If they start creeping past 12 psi the HGs are going. They are full blown bad when the gauge goes beyond 15psi, because the degas cap will start venting at 15-18psi.

My truck has bad HGs, I am randomly puffing smoke but not all the time, I have no whistle, and just a little puking a last week, but none since then.

So sometimes its a catostropic failure, other times its subtle like what mine is like. :dunno: