RumHam
Part of things
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Posts: 46
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Jul 24, 2024 21:38:41 GMT
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I had a split bag on the rear of the bmw and undertook the job of swapping both bags out tonight. Apart from being sent two passenger side versions the job was straight forward. Apart from….. when I went to remove the spare wheel there was a pool of what looked like green oil. Within the spare wheel well is the compressor for inflating the bags. I opened the compartment for the compressor and it appeared mint and dry. The car has now inflated and levelled off, we’ll see in the morning if it holds pressure but all looks ok so far. Any ideas on the fluid?
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Davey
Posted a lot
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Resident Tyre Nerd.
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Jul 25, 2024 10:56:41 GMT
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Silly question maybe but, how green?
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jimi
Club Retro Rides Member
Posts: 2,058
Member is Online
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Jul 25, 2024 13:47:27 GMT
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Isn't BMW hydraulic fluid green ?
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Black is not a colour ! .... Its the absence of colour![](https://jlawson.co.uk/images/Jimisig04.jpg)
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Jul 25, 2024 18:18:13 GMT
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i cant think fo any green fluid that i had in my e39, but maybe some time ago, some green anti freeze leaked into the spare wheel well? I know once its in there it wont drain. It is a good idea also to put some drains in the spare wheel well, ive just had it on my e61, water got in there, had no where to go and pooled.
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Aug 14, 2024 14:08:56 GMT
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CHF 11 is green and commonly your PAS fluid on late 90s early 00s germans as well as other makes.
Though I don't believe the air pump would use any.
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ChasR
RR Helper
motivation
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Club RR Member Number: 170
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It will be from a previous spill.
Best thing to do is to mop it up, and see if it appears, maybe drive around with no fluids in the boot.
My E91 had a bottle of Long life oil tipped into the boot by the previous owner
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RumHam
Part of things
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Posts: 46
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Aug 16, 2024 20:59:13 GMT
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Thank you for the replies and sorry for the delay in updating. I had to wait around another 10 days to get the correct air bag and when I went to do the swap there was no more fluid to be seen. I think you’re all correct in terms of spillage, there’s a small shallow compartment underneath/attached the boot floor and tonight I’ve found that is pretty sodden with some type of oil so I’m assuming that’s the source. Thanks again for the help, relieved it’s a simple one for once!
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