Given how my VX drives when traveling 55 to 60 mph, I'd say driving yours at the same speeds would yield the best mileage too, and it would likely be the same as what you achieve with your Frontera both on the highway and in the city.
I've personally never tried octane boosters in my VX, but I do know that while 87 octane (US rating) is adequate for my VX, it does run a little better on 89, and since it seems most European fuel is higher in octane across the board, yours would likely react the same too.
As with any vehicle...stuff happens...and individual results may vary depending on operator.![]()
Pretty sure some have done it, so with the right parts it does seem possible.
Not sure about the Japanese versions, but I'm fairly certain that the European versions offered a TOD cutout switch for switching into two-wheel operation. It sounds like that would be your best option since converting a right-hand-drive to left-hand-drive would be cost prohibitive...to say the least.
Happy hunting Catalin. With a little time and patience, you'll find the right one.![]()