That means there’s no need to flush your car’s cooling system before adding Prestone Coolant/Antifreeze; simply pour the product into your coolant reservoir – it’s that simple. When adding Prestone, it is important to ensure the engine has cooled before unscrewing the cap of the expansion tank as the coolant operates at around 90°C.
Do I have to flush before adding coolant?
To make sure the cooling system is completely clean before adding fresh coolant/antifreeze, use a chemical flush product. Wait until cool, top up with water as necessary and repeat the step to warm the engine and allow the chemical flush to do its work.
Can you just top up coolant?
Topping up your coolant is simple. Before you start, park on a level surface and wait for a few hours until the engine is fully cold – if it's hot, pressurised water can dangerously erupt from the reservoir cap when it's unscrewed. Fill with coolant: When filling, slowly top-up to the maximum marker.
Can I mix old and new coolant?
Some people believe that they can mix the two. This is a mistake and can lead to expensive repairs. The two coolants should never be mixed together as they do not react well. When mixed together they can form a thick, jelly-like substance that can completely stop all coolant flow which can lead to overheating.
Related Question Can I top up coolant without flushing?
How far can you drive without coolant?
If your car has a low coolant you can drive for some time. It really relies on the level of coolant. If it is low but it is above the minimum, you can drive your car for a few days. But if it is below the minimum, please do not even try to run your engine.
Will Halfords top up my coolant?
Antifreeze top up and replacement at Halfords
If you've never topped up or changed antifreeze or don't have the time/confidence to do it, remember Halfords can do it for you. For a small fee, we'll happily top up/replace engine coolant and even carry out a free a safety check while we're at it.