Owner's Manual
Page 287
... Castrol. The API Service Symbol "donut" is only used at customer request, at the normal maintenance services. G022917 06 `` 287 Consult your Volvo retailer for prolonged driving in comparison to a reference oil. Synthetic oil is not used when the oil is changed at additional charge. This oil is divided into three parts...
... Castrol. The API Service Symbol "donut" is only used at customer request, at the normal maintenance services. G022917 06 `` 287 Consult your Volvo retailer for prolonged driving in comparison to a reference oil. Synthetic oil is not used when the oil is changed at additional charge. This oil is divided into three parts...