I had my SUV (2000 Ford Expedition) tuned up & it’s purring like a kitten. Thanks for the advice everyone. So that leaves me with only problem. I’m losing about 1-2 quarts of coolant every couple of days. While I was having the tune up done, I asked the mech to try to find where the coolant is going. He couldn’t. He did say that they’d pumped the system up to 18 lbs (it’s got a 16 lb cap) and it held for 45 minutes, so I’m a little (little-little) less afraid that it’s my head gasket. Questions are these:
- Could my 16 lb cap be at fault? It got pretty gunky when I mixed the coolants (see my post - Don’t cross the streams).
- Could my rear heat exchanger be leaking and where would the coolant come out? It’s got rear air and heat that’s controllable form the second seat.
I never see water on the ground or dripping. No white exhaust to detect. Doesn’t run rough at all at startup. In other words, none of the traditional head gasket indicators.