I drained my oil pan to examine the contents before I started the head gasket replacement. There was around 2 gallons of fluid in the sump. It was the consistency of water (or thinner) and just -rushed- out of the pan. It smelled like fuel and had a greenish tint like anti freeze. I'm glad I didn't run the engine long when all this happened. This stuff had almost no viscosity, or lubricating properties. Does this jive with anyone's symptoms of blown headgaskets? Rich #5335 -MD