Which Oil should i use?

[joshbl]

I've got a 1.3 L reg K11 and i'm about to service it myself. Only problem is i'm not sure which grade of oil to use. Haynes says to use 15W/40 but other sources say to use 10W/30. Any Ideas which i should use? cheers

 

[andy]

I've got a 1.3 L reg K11 and i'm about to service it myself. Only problem is i'm not sure which grade of oil to use. Haynes says to use 15W/40 but other sources say to use 10W/30. Any Ideas which i should use? cheers

10/40 semi synthetic

 

[Shaun]

see opie oil recommends 5w/30 ?!?!