As 4x4 says. Currently you know the top up coolant is genuine Volvo, but there is no telling what the coolant is that is in the car. Flush the old out and refill with known genuine.
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2001 V40 2.0lt Sport Lux - Daily Driver. 178k miles.
2003 C70 2.4 GT Convertible - Garage Queen. 67k miles.
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