I'll delete the post I'm just curious because everywhere says to use synthetic now that I'm researching it, yet I'm on original turbos running a conventional with no issues so idk
I've been using conventional 10w40 castrol gtx and a litre of motomaster 5w20 for the past 60k kms since I had the car, I didn't know I needed synthetic.
The car is running fine it is stock and not driven hard.
Have I done damage?