I forgot to mention that she burns about a quart of oil in 3000 miles. Does that change the scenario much? Also, how hard is it to get the manifold off? It looks pretty tight in there.

I am new to the forum, but not to Astros. We have had Rosemary since 2002. She has 187K on the original engine and transmission. Recently her engine has developed a coolant leak from the left bank of cylinders. It seems to be coming from the head gasket, although from reading the forums it may also ...