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C30 / S40 & V50 '04-'12 / C70 '06-'13 General Forum for the P1-platform C30 / S40 / V50 / C70 models |
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Coolant tank fluid levelsViews : 674 Replies : 13Users Viewing This Thread : |
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Aug 13th, 2018, 18:25 | #1 |
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Coolant tank fluid levels
Hey guys,
After driving home today from work, I decided to check the coolant level, and noticed it has 2 different levels. Is this normal when its hot? (The fluid on the left is pretty much at the MIN marker) Cheers, Phil
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Volvo c70 T5 Se Lux Stage 1 280bhp 335ft/lb Torque Previous Volvos: Volvo S40 1.9d |
Aug 13th, 2018, 18:42 | #2 |
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Min and Max markings are for cold checking only..... Proper cold though so check again in the morning.
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2002 S60 SE D5 Manual 209000 miles |
Aug 13th, 2018, 18:59 | #3 |
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Will check again in the morning.
But the point I was getting at, is there seems to be separate tanks when its hot. If you look at the picture, there is fluid on the right, that is higher than the fluid on the left. Is that normal when its hot? (I have never noticed, though I don't often look at the engine bay when its hot)
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Volvo c70 T5 Se Lux Stage 1 280bhp 335ft/lb Torque Previous Volvos: Volvo S40 1.9d |
Aug 13th, 2018, 19:46 | #4 |
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Hi
The fluid flow into the tank flows through a type of weir compartment inside the main reservoir.. If you look at it with the engine running you will see the flow. If you carefully take off the cap and look inside you will see the fluid flowing out of the weir compartment into the main reservoir. Possibly to reduce airation?? Iain Last edited by IainG; Aug 13th, 2018 at 19:48. |
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Aug 14th, 2018, 08:47 | #5 |
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Just checked again this morning, and the fluid is still in the same position (some of it is in the upper tank)
For reference I changed the tank as the old one had a crack in it, is this tank faulty?
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Volvo c70 T5 Se Lux Stage 1 280bhp 335ft/lb Torque Previous Volvos: Volvo S40 1.9d |
Aug 14th, 2018, 08:55 | #6 |
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Hi
As I said earlier there is a weir in that compartment. so the outlet of the weir is slightly higher than the coolant level. Mine is a new reservoir and just the same. more noticeable if the front of the car is lower than the back. i.e. parked nose down on a slope. The weir outlet is at the end nearest the windscreen by the filler cap and on mine you can see the flow with the cap off and the engine running. Only open the cap with the engine cold or release the pressure slowly. Iain Last edited by IainG; Aug 14th, 2018 at 08:59. |
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