How long can engine oil last in motorcycle?

I just bought a Honda CBR 250r from a friend. He bought it brand-new at the end of 2012, so it's 3 years old now. But the milage is only about 160, pretty low. Most of the time it just stays in his garage, without any maintenance. I've been using it for two weeks since I bought it, and added another 150 miles to it. I wonder if I need to change the engine oil and do some other maintenances now? I also checked the oil, it is full and looks pretty clear.

How long can engine oil last in an unused and brand-new motorcycle? I tried to make an appointment to the dealer and schedule a maintenance but the local Honda dealer here won't be available until a month later.

Motorcycle problem 2003 vtr250?

Motorcycle problem 2003 vtr250?

Added (1). i recently purchased a honda vtr250 2003 model with 20,000 miles on the tach. There's 2 major problems.
1 being that the bike does not rev past 5 k rpm (no sputtering, backfiring or jerking). Its almost like there's a rev limiter at 5k.
2nd being that the tach needle bounces alot at all rpm ranges.

Any help or input would be highly appreciated, thanks.

Looking for a nice first bike?

I'm gonna buy a motorcycle in January 2016. I want to get a cruiser but I don't know where to start. I don't want to pay too much and my friends are telling me to get 1100 cc because that's the only way to keep up on the freeway. I really like the Honda Shadow line but all I see is 750cc does anyone know ones that look simular to like a Honda Shadow Aero that's 1100cc?

How much will this cost? (Insurance)?

How much to insure a bike for liability? Honda CB300F, 17 years old, new rider, 4.0 gpa, California, male, recreation and not for commuting. No previous accidents.

Can I buy a motorcycle from a dealer being under 16?

If I go to a dealer can I buy a motorcycle if I don't get a loan on it. I live in California. Also what should I expect would they give me a hard time or ask my parents if they're sure about they're decision and make them sign papers. Or will it be simple and I could just walk out the door with my new Honda Grom.

Added (1). I pay for it in full cash could I get it?

Do you parental consent to buy a motorcycle?

I'm 16 and I'm going to go buy a honda grom but my parents can't be with me when I go to pick it up from the honda dealership. When I'm there will they try to see if I'm 18 or make me come back with my parents? I live in California by the way.

Motorcycle insurance policy has wrong bike model on papers. Bike got stolen. Am I screwed?

I recently renewed my motorcycle insurance (Mid august 2015). I did this on gocompare.com for a Honda pcx 125 scooter. Two weeks ago my scooter was stolen and upon making a claim I realised on my insurance papers that I'm actually insured for a Honda s-wing 125.

On gocompare.com in my saved quote searches it still says that I was quoted for a Honda pcx. At the time of taking the insurance out I had noticed that when it took me to the insurers website to confirm it had switched it to a s-wing and there was no option to select a pcx. I took the insurance out anyway with the intention of calling them immediately to change the model. However I completely forgot about it. So far they have not noticed but I assume they will. Am I totally screwed? Is there anything I can do convince them it was their mistake?