1) Exactly what type of motorhome is it? Is it a typical Class C (too little ground clearance, usually way too much overhang, poor ground clearance, too wide) or a bigger diesel pusher (too long, too little ground clearance, too wide, need for ULSD if 2007 or later)? Or is it set up better for 3rd world travel? Can you survive no RV parks with no "plug-ins"?
2) Do you plan to go thru China (much planning, escort, $$$$ needed, cheaper if in a group), then Mongolia and Russia; or ship across Bay of Bengal from Pt. Kelang in Malaysia to India (Myanmar so far not friendly to independent travellers except with expensive escort, like China - cheaper in a group), then drive thru Pakistan and Iran to Turkey?
3) Carnets for North Americans are a big problem right now. the Canadian CAA was doing them bailed in March 2015. A European agency has to my knowledge not yet stepped forwards to do carnets for North Americans. They are needed for Malaysia and I think India and Pakistan; Iran is a maybe I think, also Thailand.
My next trip is likely to be Alaska to Halifax, then Antwerp to Mongolia and back to Germany, then next year Germany to Magadan and back, possibly Central Asian "stans"; also little detour to Israel and back by boat; NO carnets needed!
Shipping across Atlantic can be cheaper than Pacific by a factor of up to 5 to 8!! Personal experience with both.

Charlie

__________________
Unimog U500 w/Unicat