You could have water in the oil, grey (coolant) or blue (oil) coming out the tailpipe, lower compression in one or adjacent cylinders, lower vacuum, the engine will run rough, like it is out of time and nothing you do with the timing will adjust to fix it, the coolant level in the radiator will lower (for no reason at all) and you will not find a leak anywhere nor a puddle of coolant under your car. Usually, it is a combination of bad compression and disappearing coolant. good luck.
sure it's fun (most of the time), but it's only a car.
- loss of compression,
- loss of coolant,
- loss of engine oil,
- engine oil in coolant,
- coolant in engine oil,
- air bubbling through coolant with filler cap off and engine running (caution: do this only with cold engine).
'59 T-Bird..[color:blue]'70 Mustang Convert</font color=blue>...[color:green]'72 Mach One</font color=green>
http://clubs.hemmings.com/baymustang/t-bird.jpg The Black BirdAt 42,she's the oldest in my Ford stable