Maxwell: I'm checking the valves now. I did run a a couple of thousand kim extra because I wanted to do it when I reach Cape Town. That could explain the noise but how could it have anything to do with the oil consumption? The particular oil that I used when I changed it in Zambia was Castrol Edge 10W-60, which has worked fine on my friend's KLR650. In Namibia I changed it into Castrol STX mineral oil and it's now consuming that as well, or even more I think.

Traveling_Light: Nope, I'm gonna ship the bike and myself back to Europe with an airplane.

stoic bloke: I didn't top it up, I changed the oil then. But I did check the level with a zip tie and it was almost two cm below the end of the dipstick. I'm pretty sure that the noises come from inside the engine, especially the weird howling thing. Otherwise I would think it comes from a bearing but the noise comes and goes in every few seconds.

Jami