Oil grade ???

[audi90]

What's the best oil to put in a 4,000 mile unleaded 1300 a series engine????
Is 15/40 or 10/40 any good????

[dalebrignall]

20/50 in any morris minor the other stuff is still thin , go to b and q and get carlube motorway 20/50 it is a propper speck oil for £11 good value , you can get it from morrisons or wilkinsons a little cheaper i use the car lube stuff