Hello good people of the Bike forums!

I'm planning a UK to NZ trip starting in the latter half of next year, I think I'm leaning towards Russia - Stans - KKH - Myanmar - SE Asia - Aus - Nz as a route.

I currently blat about on a KTM 690 Supermoto, yes I love it but it's imminently going to be replaced by whatever bike I will do the trip on so I can get used to working on it and do all the preventative/set up stuff gradually without feeling rushed.

In terms of choice I just keep coming back to the XR400.

Reasons; air cooled, kick start, carb, very light, extremely reliable if treated right and there seems to be at least 1 or 2 buyable ones popping up online every week here in the UK. Cheap for a decent example also.

I'm comfortable with the 5 speed 400 single format, I rode all around Australia with a DRZ400E for 6 months on road and dirt so I know roughly what I'm in for in that respect.

My only slight concern is the very short oil and filter interval. a bit of poking around forums reveals that I can probably stretch it out to maximum of 2200km, similar to what I was doing with the DRZ. It was fine in Australia, seemed like whenever I needed one there was a Suzuki shop to sell me an oil filter, a crush washer, a couple of litres of oil and they'd let me use their drain pan in the carpark.

I'm betting it's not that simple in remote places like Central Asia. What do the guys with little dirt bikes do on RTW rides? Just carry a bag full of oil filters and bottles of oil strapped to the bike or is that stuff available anywhere?

Should I be considering a bike with longer intervals?

Any input would be appreciated.