1995 Z28 Disappearing Coolant...
Alright guys, I've searched the forums on here, and can't find anything that sounds related.
I've got a 95 Z28, bone stock, 109,000 miles on it. From about 100k to 107k, the low coolant light had been occasionally coming on. I ended up replacing the radiator, H20 pump, heater core, thermostat, hoses, etc.
Over the past 2k, I've had to add about 3 gallon of coolant. Here's the kickers that make no sense to me...
A) I have no visible leaks under the vehicle, ever.
B) Once the engine is warm, I get no steam or water vapor out of the tailpipe.
C) No coolant contamination of the motor oil.
D) No oil contamination of the coolant.
E) Just recently pulled the valve covers to quiet down a loose rocker - the tops of both heads were spotless.
F) No coolant contamination of the auto trans fluid.
Before I start to spend mucho bucks... any advice? I'd think with a cracked block / head / blown gasket, I'd see some contamination somewhere.
Anybody ever had anything like this???
Thanks in advance for your responses.