ok, now ive done a heap of real world thrash testing and i have come up withe these 3.
ultimate in temp and pressure control. penrite sin 10w-70
for those that dont try and kill there engines penrite synthetic 5 5w-60 (and who are scared of the 10-70 rating lol)
budget and very ggod. penrite hpr10. 10w-50
these are by far my first choices. ive tryed mobil,shell,castrol,valvoline,motul,elf.
another good one to mension is castrol r 10w-60. (now edge 10-60) a good oil but tends to sludge up pretty bad.