Where is the roll over valve on a 1999 Volvo S80?

The rollover valve on a 1999 Volvo S80 is located in the fuel tank assembly. It is typically positioned near the top of the tank, integrated within the fuel filler neck or close to the fuel pump access point. This valve is designed to prevent fuel spillage in the event of a rollover by blocking fuel flow. For precise location and access, referring to the vehicle's service manual is recommended.