Tyres over five years old may still look good, but they'll have lost the
stickiness needed to give a good contact with the road, and need replacing. As for the oil, it should be checked with the bike upright, not leant over. Also, go over the bike and check the tightness of the nuts and bolts. You don't know how much TLC the previous owner gave the bike. While you're at it, you might as well give all the moving parts a good lubrication, and change the oil, if you don't know how long it's been in the bike. Check everything over, and enjoy the bike.
