[99cobralover]

hey guys, i am putting the heads back on my cobra. i see that the head bolts need to be oiled before torque,but, i wanted to know if the bolts have to have some kind of sealer on the ones that go into the water jacket. the hanes maual doesn't say to,but, the instructions that came with the bolts says to use it. which should i follow. would it leak if i didn't seal the bolts. thanks.