Just purchased a 2004 Volvo XC 70 with 155K
Current oil unknown but viscosity is 0-20 according to the oil change sticker.
Manual states "car was certified to standard using ILSAC oil specification GF 2 , 5W -30 oil" (low HTHS (≤ 3.5cP)
All oil specs in the owner's manaual are a bit out of date...