For the past few rides, I think my 2007 Ninja 250 has been running hotter than before. At least, I think it feels hotter through the seat, but the oil temperature gauge seems to be pointing pretty much where it always has (1/3 of the way up from C).
I've put on about 200 miles since I bought it, and I cleaned and lubed the chain (it was getting kind of grungy), but that doesn't seem to have had any effect. The oil level seems fine. My mechanic checked it out when I bought it, and declared it like-new, so I don't think there's anything disastrous going on here. Apart from feeling warmer than before, it rides just fine.
Is my engine screaming out for an oil change, or something like that? Or is this just a consequence of riding in warm summer weather, and as long as the oil temperature gauge doesn't flip out I'm fine? Or is the oil temperature gauge the authoritative measure of what's going on with the engine, and I'm just imagining all this?
Edit: After I shut it off, I hear the fan come on for a minute, and then turn off. I don't know what cooling systems there are but that one seems to be operating. That might lend support to the "just being paranoid" theory.