What grade oil does a Honda varadero XL 125 2001 have.?

Honda actually recommends 10w/40 semi-synthetic, but you won't do any harm with 10w/30.

Honda Xl125 Varadero

10W/40 semi synthetic motorcycle grade oil is the correct stuff for older Honda's. Don't try to be clever and stick the wrong grade in, or use car oil, because you could damage your engine.

I usually ran all the 4 stroke motorcycles I've owned on 10W/40, there's many types of oil for different temperatures; but here in the UK 10W/40 seems to be most common.

The great oil debate is endless, and no matter what I say, you can find those that will dispute it. What you're using is fine, as long as you change it often. Not until you hit extreme hot or cold temperatures should you think about altering. (Look on the back of oil, it has a little temperature guage and the weights that best work with it.)

Dinosaur vs Synthetic is another endless debate, but I've used both in the same machines and it has had no dramatic effect.

When in doubt, change your oil. Any clean oil is better than any dirty or none at all.