Redbrown looking residue at the bottom of the expansion tank - Page 2

El Padrino · Jul 4th, 2024, 13:02

Thank you Luxobarge and ITSv40. As the thermostat is fine, I'll leave it and have the new OEM thermostat and sensor as a spare.

I thought something was not quite right as I started to fill with coolant. So far, I've added 2 litres of genuine Volvo coolant and 1 litre of de-ionised water. Waited for a few minutes to let the mix go down, but it stayed at the max level without dropping. I was expecting to be able to put the full 7 litres (capacity for a turbo system) of a 50/50 mix in straight away. I got her up to temperature after 10 minutes but the level didn't go down. At this point, I kept saying there's not enough coolant mix in. Went for a short drive and as you rightly said Luxobarge, the low coolant level light came on. Once home, I lifted the bonnet to cool the engine and could see the expansion tank was near empty. I'll fill it up again once the engine has cooled.

Luxobarge · Jul 4th, 2024, 16:13

Yes, pretty much my experience. Do that once or twice more and you'll be all good. Bit of a pain, but you'll get there.

El Padrino · Jul 8th, 2024, 09:39

Quote:

Originally Posted by Luxobarge

Yes, pretty much my experience. Do that once or twice more and you'll be all good. Bit of a pain, but you'll get there.

Thanks Luxobarge, the coolant level looks fine now, after a second top up test drive. Now I've actually got my hands dirty and done a coolant flush and renew, I know what to expect for next time.

Thanks to everyone's contribution on this thread. The information has been a great help for me and hopefully for others.

Jul 4th, 2024, 16:13	#12
Luxobarge Premier Member Last Online: Jul 6th, 2024 10:05 Join Date: Jan 2011 Location: Horne (Nr. Horley)	Yes, pretty much my experience. Do that once or twice more and you'll be all good. Bit of a pain, but you'll get there. __________________ Some people are like Slinkies, they serve no useful purpose but they still bring a smile to your face when you push them downstairs.

Jul 4th, 2024, 13:02	#11
El Padrino Member Last Online: Jul 9th, 2024 16:48 Join Date: Aug 2020 Location: N/A	Thank you Luxobarge and ITSv40. As the thermostat is fine, I'll leave it and have the new OEM thermostat and sensor as a spare. I thought something was not quite right as I started to fill with coolant. So far, I've added 2 litres of genuine Volvo coolant and 1 litre of de-ionised water. Waited for a few minutes to let the mix go down, but it stayed at the max level without dropping. I was expecting to be able to put the full 7 litres (capacity for a turbo system) of a 50/50 mix in straight away. I got her up to temperature after 10 minutes but the level didn't go down. At this point, I kept saying there's not enough coolant mix in. Went for a short drive and as you rightly said Luxobarge, the low coolant level light came on. Once home, I lifted the bonnet to cool the engine and could see the expansion tank was near empty. I'll fill it up again once the engine has cooled.

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