Club 80-90 Forums

6-8 weeks ago I needed to drain the coolant system in a big hurry. (Not enough antifreeze in the mix + big frost + pitch dark...) Since then, there's been a bucket of diluted antifreeze sitting under the van.

Can I reuse the undervan supply, filtered through an old T-shirt, or should I write it off? I've got a bit of concentrate left over -- couldn't fit it into the system last time.

The engine is pretty knackered, unlikely to be used for much more than being driven to a garage for a replacement. The main thing now that the time for hard frosts is hopefully gone, is rust prevention.

Does anyone know what antifreeze does when exposed to the air? Does it degrade? Evaporate?

Use it but invest in a tester so you know what % you have in the system.

Air isn't going to effect it. It's full of water already

if your not bothered reuse it,
even weak mix will protect a little.
it needs to be quite cold to cause problems,even water!
i had plain water with the snow on the ground and it never frooze!
but antifreeze should be replaced every few years anyway!
the addatives also prevent corrosion of internal metal parts,including radiators and early front-rear metal coolant pipes! so in the long term replace it, short term use it.!

Finally got round to sorting it! Thanks for the advice; I kind of thought it was no big deal but just wanted a bit of confirmation.