Water in oil, steam from exhaust after engine has warmed up, compression test, pull spark plugs and look at electrodes.
Only when they are bad.
intake gaskets are between the head and intake. head gaskets are between the head and the block..
bad head gaskets, or a crack in the block or head.
Head gaskets, head gaskets, head gaskets
How do you know the gasket is not bad? f you oil is milky then there is moisture mixed with the oil. This can be a blown head gasket or a warped or cracked head.
Have the head gaskets checked and intake manifold gaskets checked for leaks. The 3.4's are known for head and intake leaks! Or a bad thermostat.
Head gaskets are supposed to last the life of the engine. There is no "care" specific to head gaskets.
head gaskets are probably bad and leaking oil onto crossover pipe .
Head gaskets are very cheap. It is the labor to install them that will be expensive. I cannot tell you the cost, just go get estimates.
There are ( 2 head gaskets ) one head gasket for each head on your V6 engine
It may be the water pump.
YES