Where do you add coolant to Volvo s90?

To add coolant to a Volvo S90, locate the coolant reservoir, which is typically found near the front of the engine bay, marked with a cap labeled for coolant. Make sure the engine is cool before opening the cap to avoid injury. Carefully pour the appropriate coolant mixture into the reservoir, ensuring it reaches the recommended level indicated on the side of the tank. Always consult your owner's manual for specific instructions and coolant specifications.