Hello All: My 2001 Impala 3.8 just turned over 69K miles. It will be 7 years old on Dec 2007. I bought the car when it was about a year old with 10K miles. When the car was four years old and about 40K miles, I drained the 'DeathCool' coolant and replaced, and included a new AC Delco radiator cap. I burped the car at the thermostat housing, and have had no problems, so far. Today I took the radiator cap off, and noticed some sludge on the cap. I have heard that this is an early warning that the intake manifold gaskets are about to fail, and the sludge is a result of air in the coolant, or 'over extended' deathcool. So, should I change the coolant now (again)? Should I just wait a few days for the manifold gaskets to fail? Any advice is appreciated. Take care, Bill
- posted
16 years ago