The dealer here in Arizona just recently told  me that my heads (91 GL with
97,000)  are just starting to show signs of slow leakage. My heart fell to the
floor as you can imagine. Then I remember a while ago someone was writing
about a
fluid they put in the system that stopped up the leak for almost 40,000 miles.
Anyone know the name of this stuff and is it reliable. Thanks for any input at
all. -
Dan