[alanmcorcoran]

I think it may be more than psychological. When my oil was just a little low it had a huge impact on performance.

I've also noticed a big difference in power after the bike is running for about ten minutes. My bike sucks for about the first five minutes or so. Very sluggish in the high revs. I don't know squat about the MC internals, but my guess is, the oil gets more "slippery" when it's hot and the transmission exerts less drag on the engine. I'm sure that the other experts on here will set me straight.