![]() | Home > Maintenance & Modifications > Mixing Coolants |
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sako243 Member Since: 08 Jul 2014 Location: Wales Posts: 1237 ![]() ![]() ![]() |
You shouldn't mix different colours of coolant as they can react badly together and start eating things inside the engine (seals, aluminium etc).
So given they can chemically react together then as the temperature rises I can only imagine it'll get worse with temperature so possibly. Ed 82 Hotspur Sandringham 6x6 95 Defender 110 300Tdi |
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BuckBlu110 Member Since: 19 Apr 2014 Location: in the pub Posts: 719 ![]() ![]() ![]() |
When mixed they can also form a gel when mixed which blocks the cooling system and causes overheating. I learned this the hard way after a not so helpful mechanic topped up my mothers old blue glycol filled disco with red oat.
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Greyman110 Member Since: 29 Sep 2017 Location: London Posts: 327 ![]() ![]() |
Think I'll be doing a flush
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Greyman110 Member Since: 29 Sep 2017 Location: London Posts: 327 ![]() ![]() |
If I drain the coolant and flush with water, can I leave it empty until the new coolant arrives or should I not let the system completely dry out?
I obviously wouldn't be starting the car until it was filled up. |
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rallysteve Member Since: 10 Feb 2014 Location: Cumbria Posts: 2238 ![]() ![]() ![]() |
If yours is a TDCi then surely it had OAT coolant in from new anyway?
Steve 02' 110 TD5 Double Cab Rebuild Thread |
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Greyman110 Member Since: 29 Sep 2017 Location: London Posts: 327 ![]() ![]() |
It is a TDCi but the book mentions Texaco XLC.
I compared the boiling point of the OAT I recently topped up with and the recommended XLC or equivalent which seems to have a higher boiling point. In the last two years since I've owned it I haven't done a coolant change so I don't know if its ever had anything added or changed previously. |
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Pacha Member Since: 23 Feb 2020 Location: North Yorkshire Posts: 772 ![]() ![]() ![]() |
What colour is the stuff that is currently in the system? Rgds.
Chris |
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Greyman110 Member Since: 29 Sep 2017 Location: London Posts: 327 ![]() ![]() |
It looks red to me.
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