Hello, I'm new to this site, and I just bought a 2003 Impala 3.4L with 162,000 miles. So far I really like the car, it runs and drives great. I do however have a few questions... 1. how high should the temperature gauge read? It seems to hover about 1/4 of the way up while driving, but has gone up to 1/2 while idling for a few minutes. It seems a bit low to me. And 2. how long should it take to warm up? My last car was a little 4 cylinder that pretty much came up to normal operating temp in 5-10 minutes of idling, but this one seems to take much longer to start producing heat, about 4 miles of driving. My next question is pretty much just a confirmation of whether or not the intake gasket is bad... It is leaking oil on the outside of the engine, rather heavily, and has oil in the radiator and coolant tank. There is no coolant in the oil however.