We've been having problems with our S70 for about 6 months now. Pressure is building up in our coolant reservoir and we are loosing coolant from the top of it (escaping around the cap). Once it ran low on coolant and the car overheated for a few seconds. My daughter caught it before it was to late (on a road trip) and pulled over quickly and shut it off. The thermostat to reservoir line had ruptured and she got that replaced and kept on driving (3 weeks ago, no overheat since and the car runs well).

Here is the thread, I'd like some input, etc.

https://volvoforums.com/forum/volvo-...roblems-63516/

Thanks.