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Algae growth in radiator expansion tank

General Tech Talk

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Posts: 817
Joined: Fri Jun 17, 2005 9:23 pm
Location: Sydney

Algae growth in radiator expansion tank

Post by TheOtherLeft »

Does anyone else have problems with algae growth in their radiator expansion tank?

I've had to change out the fluid in the expansion tank for the second time in about 8 months as the fluid is brownish again. I've checked the radiator and the fluid is still flouro green and there are no bubbles in the coolant so I know it's not a blown head gasket.

Is the coolant meant to inhibit algae growth?
Posts: 2492
Joined: Sun Nov 24, 2002 8:57 pm
Location: Melbourne

Re: Algae growth in radiator expansion tank

Post by bazzle »

It will be rust scum getting washed out of pockets in the system where at some time in its life the coolant wasnt at the correct strength.
It will happen for a long time.

Bazzle
Posts: 817
Joined: Fri Jun 17, 2005 9:23 pm
Location: Sydney

Re: Algae growth in radiator expansion tank

Post by TheOtherLeft »

bazzle wrote:It will be rust scum getting washed out of pockets in the system where at some time in its life the coolant wasnt at the correct strength.
It will happen for a long time.

Bazzle
So do I need to do anything about it? Should I change the the water in the expansion tank?
Posts: 2492
Joined: Sun Nov 24, 2002 8:57 pm
Location: Melbourne

Re: Algae growth in radiator expansion tank

Post by bazzle »

I would wash out bottle after a few hot runs. "If" it keeps comingt you can purchase cooling system cleaner.
Radiator will prob need cleaning then too.

Bazzle
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