I'm currently waiting on 4 liters of Honda NEXT oil, ordered from Japan. My thread here:
http://ecomodder.com/forum/showthrea...oil-34506.html
Ravenol sells a 0w16 which you can find on Amazon, but it's pretty expensive. In the US, Honda recommends Penzoil Platinum 0w20, which is a bit thinner than Mobile One 0w20. Honda's Green Oil is around a w20 when hot, but thinner than a 0w (~32 vs 40 cSt ) when cold. NEXT is extremely thin, something like a w12 or w8 when hot, and MUCH thinner than anything else I could find when cold (~20 cSt).