I got the question of fuel economy and power difference when using lighter vs thicker oils
Intended oils to use are per manufactures spec 5W-30 Castrol and I did read a lot of good opinions about specially more euro formula 0w30 and 0w40 , car has DI turbo 2.5 liter engine .
I can use 5w30 Syntec or 0w30 Syntec (made in Belgium) or 0w40 Syntec (made in Belgium) , do you think there will be noticeable fuel economy or engine power feel difference ?
Intended oils to use are per manufactures spec 5W-30 Castrol and I did read a lot of good opinions about specially more euro formula 0w30 and 0w40 , car has DI turbo 2.5 liter engine .
I can use 5w30 Syntec or 0w30 Syntec (made in Belgium) or 0w40 Syntec (made in Belgium) , do you think there will be noticeable fuel economy or engine power feel difference ?