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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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Check your expansion tank !Views : 1492 Replies : 24Users Viewing This Thread : |
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Jul 10th, 2022, 21:03 | #1 |
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Check your expansion tank !
Decided to to a coolant change and flush today as my last one with Comma G48 was in 2019. I actually did a coolant flush and change when I got the car in 2018 as it had been dry stored for 7 years.
One thing that was slightly worrying was the state of the expansion tank outlet pipe. It comes with metal sleeve fitted to stop it crushing and that had pretty much disintegrated along with a lot of the plastic. I had fitted this secondhand in 2019 and it looked in pretty good nick Luckily I had ordered a new one from FRF at a very reasonable price with VOC discount Did a reverse flush and fitted new expansion along with a new gen Volvo hose and clips Refilled with Comma Super Coldmaster Little drive up to temp and checked for leaks. All good One thing I did notice was the Comma G48 that came out was very clean and still a nice colour. Also fitted new horns today as one had packed up I'm going to relocate them soon but didn't have time today
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V70 D5 SE Geartronic 215bhp Saville Grey 2012MY 940 LPT Manual 1996 740 SE 1990 Last edited by griston64; Jul 10th, 2022 at 21:07. |
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Jul 11th, 2022, 07:40 | #2 |
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Nice work there. Looks smart now. I'm sure it's probably been discussed before but is Comma's G48 good enough for a mixed metal engine, as in is it close to the Volvo Blue green spec. I only mention it as I use Preston's in all of our cars and I've never really thought about using anything else. I wonder if the corroded tank insert was incorrect coolant from a previous owner?
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Jul 11th, 2022, 07:45 | #3 | |
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Jul 11th, 2022, 07:46 | #4 |
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Hi I have always used volvo blue.green genuine in my D24 900 are there any known issues or just keep with it after 23 years on it
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Jul 11th, 2022, 07:47 | #5 | |
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In fairness, any mild steel exposed to moisture for 20+ years is going to corrode though.
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Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ |
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Jul 11th, 2022, 09:38 | #6 |
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level switch
If you replace the expansion tank, get one with a level switch.
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Jul 11th, 2022, 09:45 | #7 |
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Interstingly the one I got from dealer has a float in it. I have a sensor from an 850 tank which looks similar. Wonder if that would work ?
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V70 D5 SE Geartronic 215bhp Saville Grey 2012MY 940 LPT Manual 1996 740 SE 1990 |
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Jul 11th, 2022, 10:03 | #8 | |
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It was about 10-12 years ago i researched the low coolant sensors for the Volvo so i night not have remembered correctly.
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Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ |
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Jul 11th, 2022, 10:26 | #9 |
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Yeah I changed it last year as a slight leak from that connection, plus the old tank was letting the bay down! There was a ring of plastic chunks still stuck in the hose, which I managed to fish out and then ran some water down it with the lower hose off.
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Jul 11th, 2022, 11:45 | #10 | |
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Bob. |
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