Just picked up a 2000 Impala last week with the 3800 in it. I got a*good deal*on it and even aware of problems, picked it up. 210k miles, fresh oil change, fresh coolant + coolant flush, no signs of oil in coolant or vice versa. Zero smoke.*It was leaking a bit of coolant, and I had it checked out. I was told it was the thermostat housing, which was replaced. I asked them to check the intake manifold to be sure the leak wasn't coming from there, and was told it was not - in fact, the manifold at some point had been replaced by what appeared to be an aftermarket manifold - presumably including aftermarket gaskets. However, it's still leaking coolant. I have attached a photo with the circled area indicating where the coolant pools. There's no coolant underneath the*car*when parked, so I guess it just pools in the crevices. It has been kinda chilly up in Denver the last couple days, and the low coolant light has been intermittently coming on. I have topped it off with some coolant, and the light is still intermittet. Maybe cuz of the weather?
This is a photo I just took to show where the coolant pools.I did see some coolant residue ddown on the crossmember just now.
Any input is appreciated.