Walla, th elink doesn't work, but;
from an engines technical point of view, you will be covering vast distances and encountering vastly different fuel grades/qualities.
Things to remember the further east you go;
Sulphur will be higher in fuel (a vehicle without a cat/dpf will be a good start)
Fuels are often used as a dumping ground for cheaper components, such as methanol, heating oils, fuel oils etc
Lubricity (diesel) is likely to be an issue (keep some additive with you, you wont need much - I can help with this if you want)
coking on injectors will be an issue (detergent will be an issue - I can help with this as well)
Ignition qualities will be poor, cetane/octane -so look to "retard" the timing - pull it back, or if a map exists put it to it's lowest quality setting.
Crankcase lubricants can be an issue with eastern (and western to be honest) fuels - consider starting with a very good grade and carrying that through.
Filter blocking is the industries biggest issue at the moment which is a problem from fuels containing bio. think about spare filters
if you want specifics drop me a line - email in profile.