WOW, best numbers I have ever heard of out of a 81, I am impressed. My guess is the 24 valve head and five speed add up to those impressive fuel numbers.
Rob
QUOTE=TLC42TD]For MPG followers, I've just returned from a 3,500 mile drive in my diesel through Germany, Poland, Czech Republic and France. Drove slowly most of the time 60-65mph on freeways, up to 70-80 for overtaking (and one lap of the Nurburgring !! in Germany) and averaged 33mpg (UK gallons) for the entire trip. Mix of freeway and city driving, but conservatively driven. 33mpg is about 28mpg in US measurements I think. In metric, it was around 8.5 litres per 100 kms, with a best recorded of 8.25 (34mpg).
Torque really kicks in at 2000 rpm, but it's a bit flat below that. Having said that, it's quite easy to poodle around town between 1000-2000 rpm, and pulls nicely from 900 rpm in fourth gear. The gears are widely spaced, except 4th to 5th is quite closely spaced for some reason.
For me, the diesel is an absolute pleasure to drive, and the gearbox is like a hot knife through butter when warm. I used to be very anti-diesel until I steered the cruiser and instantly fell in love with it's torquey / relaxed character.
The turbo make a light whistling noise when accelerating hard from 2000 rpm.[/QUOTE]