Got my BMW 328 lpg car back after getting the clutch sorted, so decided to go for a drive with the girlfriend...
I brimmed the lpg tank (holds 50l), and off we went..
Approximately 70% of the trip was on motorways and 30% fast A/B class single carriage way.
On motorways I sat at 70mph (psl) constantly in gear, no driving with load/p&g etc
Backroads were approached in an 'enthusiastic manner', lots of lower gear work and full throttle acceleration-maximum momentum through the corners. Only slowing down when the psl dropped.
Result was 200.5 miles covered and 49l of lpg used
=18.6(imp)mpg
Compared to the 25-28mpg I usually get on lpg, it represents circa 30% increase in Fuel consumption!
Shows that some basic techniques can greatly improve efficiency, even in large engined cars..
However, it did feel good to do some 'italian tuning'