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Expansion reservoir empty EP3

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4
Hi!

The expansion reservoir is emty but the radiator is full. Should I fill the reservoir? I do not know what coolant It is in the car. Can I just fill the reservoir with distilled water?
 
Given you don't know the overall state of this it might pay to do a full drain and refill. A 5L container of Honda Type 2 is maybe £18, at least then you'll be sure it's running a known coolant and a known quantity.
 
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