wht is the best engine oil to use??

[2.216v]

hi i have a astra coupe 2.216v , would like some advice on wht type of engine oil is best? some people say 5w-30w or 10w-40w fully or semi synthetic?

 

[2.216v]

I phoned vx garage they recommend 5w-30 fully synthetic

 

[MikeS]

use search feature on forums m8

this has been discussed consistently over the past year