Travelling around Australia in Disco.
Hi, just as a suggestion, ensure that the original plastic water pump plugs have been replaced with the brass ones, also that all debris has been cleared from around lower water tank of radiator. I also fitted Maxis tyres which I have found to be great. Good luck
Preparing a disco to travel
Please excuse my ignorance wrt UOM on this Disco, 190k miles or km's? If the first then it is brand new and if the latter, it is just nicely run in! If ± 256k km's then I am almost sure that all the standard issue Disco problems have already been taken care off and you should have a good vehicle for your purposes.
My only 2c worth will be to have the vehicle checked out by a credible person ( note - emphasis on person, and if a workshop you need to know that such a competent person looked at your vehicle). I would actually do this before starting with many replacements and cosmetic add-ons.
All posts, excluding those referring to V8's, are sound but to my mind relate to an almost complete rebuild of the van. (I consider V8's off topic for OP's question)
A word of advice, don't bother carrying spares that you cant fit yourself ie having done so before and are comfortable fixing things in unfriendly environments. A simple serpentine belt or thermostat replacement comes to mind. Totally different scenario to replace the thermostat from underneath compared to removing the rad fan for access.
I would not be comfortable with a performance chip on such a trip ( an approved remap would be my choice) but will continuously monitor temperatures (EGR, coolant and oil) to be able to take early corrective action.
A Rave manual and Nanocom or similar should be a must. Always good to provide good details of problems if you need to summons help from afar.
I know yor situation is different, with kids to consider, but I spend more time researching the route than preparing my Disco, now on 357 000km's. - excluding a few on a lowbed[bighmmm]
Enjoy your trip
gotto from ZA