hey RTH...where are the bleeder valves in the 300D 78? I notice that when i checked the engine this morning...the top radiator hose was compressed in!!!!..it had vacumm in it...i think I do need to bleed for air but i dont know where the valves are. I bought one of those antifreeze testers to see how much coolant i had in the system after i flushed it...turns out that i only put enough coolant to protect the radiator to +20F freezing temperatures...the normal is i think -40F.....i'm way out of range!!!!! could this be the reason i found vacumm in the radiator??

thanks for any replies
Allan