* Overheating: Antifreeze is crucial for preventing the engine from overheating. Without it, the engine will quickly reach dangerously high temperatures. This can lead to:
* Warped cylinder heads: The extreme heat can warp the metal of the cylinder head, causing it to no longer seal properly against the engine block. This leads to loss of compression and coolant leaks.
* Cracked engine block: Similar to the cylinder head, the engine block itself can crack under the stress of extreme heat. This is a catastrophic failure, often requiring engine replacement.
* Head gasket failure: The head gasket, which seals the cylinder head to the engine block, can fail due to overheating. This allows coolant to leak into the cylinders or oil to leak into the coolant, resulting in further damage.
* Seized pistons: Pistons can seize in their bores due to lack of lubrication and extreme heat. This requires extensive engine repair.
* Corrosion: Antifreeze also contains corrosion inhibitors that protect the engine's metal components from rust and deterioration. Without it, corrosion will accelerate, leading to premature wear and tear.
Essentially, running out of antifreeze is a serious issue that can result in costly repairs or even a total engine replacement. It's much cheaper to regularly check your coolant levels and address any leaks promptly.
