02-15-2020, 11:17 AM | #1 |
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Coolant/Antifreeze
So whilst driving I got the 'coolant low' warning lights...
I called a whole bunch of mechanic up and they couldn't give me a exact answer to what coolant/colour of coolant/which reservoir to use etc... (barring, use BMW recommended). So I found out through a forum that as small top of de-ionised water is adequate. After the top up in the (blue) circled reservoir the light/warning etc disappeared. When I opened the (red) circled reservoir, I couldn't see any fluid. Is that a bad sign? I presume that both tanks take the same coolant? Should I fill up the (red) circled tank with some coolant or de-ironised water? Or should I leave it alone till I get a warning light? |
02-15-2020, 03:31 PM | #2 |
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The red circled one is the engine cooling reservoir and needs top up with 50/50 mix BMW a/freeze and de-ionized water to the bottom of the pipe,torch may help here.
You topped up the blue circled which is the turbo intercoolers reservoir so you need to remove the engine cover carefully and check the 4 small turbo coolant hoses for leaks and replace using new hose clips.It's an M5 weak spot but easy to fix. It gets very hot there above the turbos and even with the heat sleeves in place they do eventually fry. As an additional protection I put a piece of folded thick oven foil underneath the hoses fixed with thin wire. Last edited by M5Rick; 02-15-2020 at 03:38 PM.. |
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02-15-2020, 05:38 PM | #3 | |
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Does that mean that I made a mistake putting the de-ironised water in the blue tank? Would you advice in adding some de-ironised water in the red tank too? At least till I can get the correct coolant etc...? |
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02-15-2020, 06:38 PM | #5 | |
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Any thoughts on the following? https://www.amazon.co.uk/gp/aw/d/B00...1OLE&psc=1 https://www.amazon.co.uk/gp/aw/d/B00...QTLI&psc=1 |
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02-16-2020, 03:33 AM | #6 | |
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For normal BMW's Comma and the others may be fine but for M cars I would only use the BMW product. Last edited by M5Rick; 02-16-2020 at 04:00 AM.. |
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02-16-2020, 07:06 AM | #7 | ||
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