You don't really need to "lube" an o-ring chain, they are internally lubricated. What you are looking for is a corrosion barrier. I like stuff like Chain Wax. If you put it on fairly carefully and let it dry, it's not too messy, and it will stay on the chain for a long time.
'00 416ex -- 11:1 Wiseco, stage 1 HotCams, LEXX slip-on w/ modded header, ASR +2 arms, 450r shocks, G-Force axle, FST style cooler, Trail Tech bars and clamp
Temporarily retired from my extremely short (but successful) racing career.
Maybe some IXCR in the near future.
A government big enough to give you everything you want is strong enough to take everything you have. - Thomas Jefferson
None are more hopelessly enslaved than those who falsely believe they are free.
-- Johann Wolfgang von Goethe