Driving a 2007 Volvo S40, 2.4i gasoline engine (b5244s4) with 100k miles / 160k km on it (if not tampered). Bought the car 2 years ago and I have to idea what did the previous owner do with it, besides that he was using 5w-30 oil. I'm currently using Castrol Magnatec Professional 5w-30 A5/B5 and there is a "slight" oil consumption of ~1 liter per 6k miles / 10k km.
The official Volvo engine oil documents say that for temperatures over 90F (32 Celsius) 0w-40 oil is recommended. Over here (Eastern Europe) during summer the temperatures go up to 98F (37 celsius) and winter often down to 14F (-10 Celsius), so I'm thinking of using 0w-40 all year around for better protection and maybe it will solve my oil consumption issue as well.
Should I do and engine oil flush when changing viscosity from 5w-30 to 0w-40? I will probably use synthetic Shell 0w-40 or Castrol Edge 0w-40 A3/B4, depending on the price.
The official Volvo engine oil documents say that for temperatures over 90F (32 Celsius) 0w-40 oil is recommended. Over here (Eastern Europe) during summer the temperatures go up to 98F (37 celsius) and winter often down to 14F (-10 Celsius), so I'm thinking of using 0w-40 all year around for better protection and maybe it will solve my oil consumption issue as well.
Should I do and engine oil flush when changing viscosity from 5w-30 to 0w-40? I will probably use synthetic Shell 0w-40 or Castrol Edge 0w-40 A3/B4, depending on the price.