Coolant Bottles
Coolant bottles form part of a vehicle’s cooling system. Their primary function is to store excess coolant that expands when the engine heats up and then return it to the cooling system when the engine cools down, ensuring the system remains properly filled and sealed.
There are two main types of coolant bottles: pressurised and non-pressurised. Pressurised tanks, also known as expansion tanks, are the high point of the engine cooling system ensuring an easy coolant bleeding process. These systems require the tank and cap to have a perfect seal. These tanks form part of the closed loop cooling system. Non-pressurised tanks, also known as overflow tanks, serve as an external reservoir, allowing any expansion that happens in the sealed cooling system to be caught and then returned to the system once cool.
Heat, age, incorrect pressure or oil contamination can cause the bottle to become discolored, brittle, contaminated with sludge or even break. Periodic inspections of the coolant bottle, its markings and the cap can ensure the cooling system remains properly filled and in good working order. A failing coolant bottle can lead to coolant loss and engine overheating.
Goss Coolant Bottles are high quality units, tested and verified for Australian and New Zealand conditions and match or exceed the OEM specifications. Next time you are replacing a coolant reservoir bottle, think of Goss for a quality genuine alternative.
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