I believe some people use 0/50 and 5/50. as long as its semi synthetic. the 0 and 5 grade oils are thinner when cold and thus reduce drag when cold starting, we don't get hot enough weather to require the 15 grade oils.
Thanks all, 15w50 it is then, i was a little confused after looking thru various forums, poeple were recomending thinner oils for easier starting and less clutch drag, but think i'll stick with recommended when i change oil (no idea whats in it now)