Volvo Owners Club Forum - View Single Post - Engine: B5244:

2.4TSE · Jul 12th, 2018, 22:23

1,500 miles on since turning the coolant cap rubber seal upside down, and...

...no coolant loss.

Thanks again for the Top Tip, cheshired5.

My assumption is that the ridge on the side of the seal originally presented to the neck was sufficient to allow coolant loss under running temperature and pressure but insufficient to allow loss as things cooled down a little (so the opposite of your radiator issue, john d!) - hence why I still found retained pressure when checking several hours after shut down.

Jul 12th, 2018, 22:23	#8
2.4TSE Master Member Last Online: Mar 29th, 2024 18:03 Join Date: Dec 2004 Location: Stratford-upon-Avon	1,500 miles on since turning the coolant cap rubber seal upside down, and... ...no coolant loss. Thanks again for the Top Tip, cheshired5. My assumption is that the ridge on the side of the seal originally presented to the neck was sufficient to allow coolant loss under running temperature and pressure but insufficient to allow loss as things cooled down a little (so the opposite of your radiator issue, john d!) - hence why I still found retained pressure when checking several hours after shut down. __________________ 2003 V70 2.4T SE \| Owned from new \| M56 \| Bilstein B4 \| Nivomats \| BSR PPC \| Ferrita Exhaust \| Poly small bush in lower torque mount 2008 C30 T5 SE Sport R-Design \| Dynaudio \| BLIS \| Winter Pack \| Towbar \| Parking Control \| Keyless \| 18" Atreus