Thread: Super annoying low coolant alarm going off until car warms up (earth issue??)

Originally Posted by Young Angus

How do I stop (or check for) this electrolysis?

There is nothing you can do about it But if it is the cause of the problem it will happen regardless of what brand/type of coolant you are using
I have had a Redarc low coolant alarm fitted in my D2a now for about 6 months and I haven't had this problem with mine, The sensors are fitted in the expansion tank.

Originally Posted by trout1105

There is nothing you can do about it But if it is the cause of the problem it will happen regardless of what brand/type of coolant you are using
I have had a Redarc low coolant alarm fitted in my D2a now for about 6 months and I haven't had this problem with mine, The sensors are fitted in the expansion tank.

Cheers, I'll see if it keeps happening. It's easy to clean every now and then and I know there is coolant in it so I guess it's still doing its job...I just have to keep cleaning the sensor. It'll be like brushing the Discos teeth!

The colour doesn't mean much as coolant can come in both green and red. There are also diesel-specific coolants. Some have anti-freeze. Maybe ring your workshop, tell them about the alarm and ask which coolant they used.
Cooling Systems - Nulon Products Australia

Originally Posted by DiscoMick

The colour doesn't mean much as coolant can come in both green and red. There are also diesel-specific coolants. Some have anti-freeze. Maybe ring your workshop, tell them about the alarm and ask which coolant they used.
Cooling Systems - Nulon Products Australia

Good idea actually thanks for that, will call them tomorrow.

I reckon you're releasing an air bubble when you remove that cap, and it may be nothing to do with the colour or contamination of the screw. To test this, back the screw out of the plastic bung, just enough to allow the air to escape. As soon as you see fluid, screw it in quick. Next day, do it again and see if you've got another bubble under that screw. If you have, either you've got air being drawn in to the system as it cools at the end of each days running, or there's gas coming from a leaking head gasket.
Don.

So coolant brand was either Bursons concentrate or some Fenix brand. Both green. That's all they could tell me.

Originally Posted by Don 130

I reckon you're releasing an air bubble when you remove that cap, and it may be nothing to do with the colour or contamination of the screw. To test this, back the screw out of the plastic bung, just enough to allow the air to escape. As soon as you see fluid, screw it in quick. Next day, do it again and see if you've got another bubble under that screw. If you have, either you've got air being drawn in to the system as it cools at the end of each days running, or there's gas coming from a leaking head gasket.
Don.

I don't usually open it up but I really did have zero problems before the coolant was changed recently.

When I take the bung off the screw is always wet and it long enough to be submerged in the coolant at the top of the radiator which is always high and doesn't drop even when I open the bung.

I was emailing David Jones from Engine Saver today and he was certain I have a problem with the coolant being incorrect and that it needs a flush. It doesn't sound like it should be reacting and corroding like that so I'd rather not risk it and make sure I've got the right stuff in there.

Next question, that has probably been asked a thousand times, what kind of coolant is best??

Penrite website recommends Penrite "blue" coolant...