Organic anti-freeze added to coolant

Xaccers · Post by **Xaccers** » 21 Aug 2008, 13:07

A work colleague is looking to change his cam belts etc on his 95 Xantia TD, and I was going through the list of things he'd need.
I mentioned coolant and he said he'd put in about 500ml of orange organic.
Doesn't this gloop up when mixed with the normal blue?
If so, any suggestions on how to clean out the coolant system fully?

lexi · Post by **lexi** » 21 Aug 2008, 22:34

Always understood not to mix different types of anti- freeze as it can rot radiator etc. Ethylene Glycol and Mono Propylene are two example of this.

Xaccers · Post by **Xaccers** » 22 Aug 2008, 01:20

That's what I understood too.
Any ideas on how best to clear out the mix?
He'll be changing the cambelt and water pump in a couple of weeks, so will be draining then, but will that be enough or should the system be flushed?

jmd · Post by **jmd** » 22 Aug 2008, 01:29

I agree with Lexi. Looks like he purchased, or asked for coolant for a Citroen & whoever sold the product assumed it was for a C5, which is LDS & mixing it with Ethylene Glycol is not advisable. I would use a radiator flush, follow the directions on the container then get the garden hose, and flush backwards & forwards, Then purchase Ethylene Glycol & distilled water mix 50% 50% and refill.

Xaccers · Post by **Xaccers** » 22 Aug 2008, 12:45

Cheers, will let him know.

Post by **myglaren** » 22 Aug 2008, 16:00

[nitpick]

LDS is the hydraulic fluid for C5s. If he's put that in his cooling system I wouldn't give much for a happy outcome.

[/nitpick]