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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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What water to use with coolant?Views : 1049 Replies : 21Users Viewing This Thread : |
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May 19th, 2020, 17:00 | #1 |
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What water to use with coolant?
Would like to flush out my coolant system as the coolant is already a light brown colour and it was changed this time last year.
What water should I mix with the Volvo coolant, deionised or distilled? Also, should I do a chemical flush or just flush it with water? PS I don't think the coolant system has ever been flushed and the car is a 2002 with 145,000 miles.
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May 19th, 2020, 17:10 | #2 |
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Distilled water is your first choice, followed by deionised if you can't get distilled. I would avoid using flushing agents unless there is a known issue with the cooling system. Refresh the coolant a couple of times making sure it circulates adequately between changes.
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May 19th, 2020, 18:16 | #3 |
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There's lots of chalk in our water locally, so there may be a case for using something else, but I don't see a lot wrong with domestic mains water in many other parts of the country.
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May 19th, 2020, 18:54 | #4 |
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^^^^ If your water supply is soft, fine. Hard water....not so good.
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May 19th, 2020, 18:58 | #5 |
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May 19th, 2020, 19:00 | #6 |
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have you got a non gen water pump fitted? seen these end up with rusty impellers within 3 months and turn coolant brown
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May 19th, 2020, 20:17 | #7 |
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I live in a hard water area so cannot use tap water.
As far as I know, it's on the OEM water pump.
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2002 Volvo V70 2.4 n/a auto |
May 20th, 2020, 19:32 | #8 |
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Drain then flush forwards and backwards with tap water, flush with distilled or deionised water then fill with 50% of capacity with neat coolant then top up with distilled/deionised.
The full process is on my YouTube channel and my coolant is still as clean and green as it was 5 years ago when the video was made.
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May 20th, 2020, 20:38 | #9 | |
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Quote:
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May 22nd, 2020, 12:33 | #10 |
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5 litres of water from local motor factors usually about £2.50 so pick up a tenners worth
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