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Coolant cap should have a rubber ring

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
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Mikele82
Posts: 92
Joined: 26 February 2019
Year and Model: XC70 04 + C30 T5 08
Location: Portland Oregon
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Coolant cap should have a rubber ring

Post by Mikele82 »

Im losing coolant, not cannot spot any leaks, except some time on the coolant reservoir.
i also hear some "weezing" sound, like air pressure releasing from cap, is that normal ?

my cap has no rubber ring or such in it. is that how it is originally?
cap1.JPG
cap1.JPG (73.84 KiB) Viewed 1820 times

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