I've raised the right rear corner of my Fiero (2.8) to do a gravity fill. I find i can get the fluid into the thermostat fill pipe and heater extension line pretty well at the angle I have the car.
So well in fact, that the fluid is completely filling the overflow/expansion tank up front of the car (to the point it overflows!)? Now I thought that the pressure cap on the radiator would not allow this to happen without pressure in the system.
Am I mistaken?