Guys,
I am having FB 15 car with 92000 km on ODO. Yesterday I did my service at Nissan and they used Castrol GTX 20W50. Since this is higher viscosity oil, I asked the reason and they said it is okay for this millage. Previously I serviced from Pitstop and they used Castrol Magnatec 10W40. I searched the internet and found that GTX 20W50 is recommended for millage more than 75000 miles (121000 km). Now I am bit worried about using this oil for next 5000 km.
Is it okay to use this oil till next service ? is there any adverse affect to the engine ?
Thank you