10-18-2023, 09:04 PM | #221 |
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Agreed. It's a pressurized system. If coolant is disappearing, there's a leak and that's unacceptable.
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10-19-2023, 07:49 AM | #222 |
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Evaporation,
Does Coolant Evaporate? (All You Need To Know Explained!) by Hank Brown December 15, 2021 Categories Cars Many car drivers notice that their coolant is disappearing. This is not good for car drivers because coolant is vital to the engine of all vehicles. If you have the same observation, let us talk about the reason behind it. So does coolant evaporate? The answer is yes, coolant does evaporate naturally. This is the explanation why you might notice that your coolant is disappearing even without leakage.
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10-19-2023, 07:50 AM | #223 |
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So is a central heating system but one still needs to top off the boiler once or twice a year
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10-19-2023, 10:31 AM | #224 |
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Apples and Oranges Chaps.
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10-19-2023, 12:25 PM | #225 |
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Well I’m happy to believe that a little coolant is lost due to evaporation
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G31 40ix M Sport
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10-19-2023, 01:46 PM | #226 |
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Yes, but not over the course of a few months. 2-3 years maybe.
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10-19-2023, 01:55 PM | #227 |
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Granted not over a few months but I’ll take the 200ml the G31 has ‘used’ over the last 14 months as ‘evaporation’ & just check it once in a while as I normally do.
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10-19-2023, 03:09 PM | #228 |
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As I've said elsewhere, all my cars seem to need a little coolant refill perhaps once every 1-2 years. It seems to be from the fact that coolant when hot, and it gets hot allegedly for emissions systems to operate, that goes into the overflow tank and lets off pressure/steam to a small extent.
The local BMW dealer keeps a jug of coolant as well as windshield washer fluid handy to top-up customer cars that casually drive in. |
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10-19-2023, 04:21 PM | #229 | |
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That’s all I’m saying. Push back on the dealer.
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04-26-2024, 11:04 PM | #230 |
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My 2020 M550i developed its second coolant leak in 10 months. First one last June was leaking expansion tank (warranty) and this time it is a coolant hose that goes from the expansion tank to the cylinder heads (costing me $1200 to fix outside of warranty). Both times I got a low coolant warning and both times the dealership found leaks. If you get that warning, you definitely have a leak.
Pic attached showing where the latest leak is.
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