The disco2 transfer box is the key.l managed to get 32mpg out of my 110 TD5 while touring Spain.
l've never managed it in the U.K.
26-28mpg is my average.
ls that Defender or Discovery TD5
And at what speed?
Even at a steady 60mph l've never managed that from any of the four TD5 Defenders we've owned, and one of them was bought new.
with 2.5N/A and standard transfer box I was lucky to get 20mpg.
Theres probably a speed that the superb aerodynamics of the body cease to function
I'm sure my squaddy-taxi (1986 2.5nad Ninety TUL,FFW) was better than that, both locally and on a ~25 mile motorway comute @ 'motorway' speeds (50mph on a good day)
it's going to be worse now as newly converted to 200tdi so I'll be enjoying the PoWaH and acceleration
^^running with standard t/box etc.
I have a 200tdi Disco t/box waiting for a rebuild but that'll probably take a few years
Rich