I have a Specialized Sirius. it is 10 years old, but only about 3K miles. I bought it, rode it quite a bit, my dad became ill and I quit. I have started again. I weigh about 215 lbs, and I ride on pavement that is the typical poorly maintained you find. No curbs or potholes to speak of.
Any way, about every 400 or 500 miles I regularly wipe and oil the chain with wax lube. I check spokes for tightness and wheels for cracks at that time, and for loose stuff. The only time I ride in the rain is when I make a mistake, maybe 3 or 4 times a year.
The bike feels great, and tight and smooth, never found an issue. I need it to last, until I save for a better one, given the economy that may be never.
My question is what kind of chain life can I expect. Are there other things that need attention on some mileage interval, like repack the wheel bearings, the bottom bracket bearings. What about the little plastic rollers on the derailleur, do they need repacking or replacement. The bike is aluminum with a Cr Mo fork, should I worry about cracking of the frame. how about the steering head bearings. I do not mind paying the LBS to do these things, I just want an unbiased opinion on when I should have this done.
Thanks in advance