The 3.5 is a good engine, though well known for overheating. It's design never stood a chance, but if well maintained, you'll never question it's integrity. I own two G6s with the 3.5 and I've the same problem in both, so please pay attention! The seal for the oil pan wears out, resulting in a painfully slow oil leak. It's not an incredibly hard replacement, and can/will save yourself some grief in the future!!!
