The reason it only holds 2 is because when its drained only the radiator is drained and not the engine block.
To drain the engine block you will need the block plugs to be removed!
For the overheating you may have a error with a water pump, or it could be an issue with a bad thermostat or plugged radiator.
Even off ignition timing or a lean fuel mixture can cause hotter than average temps.
Saturday, June 7th, 2008 AT 7:39 PM