1/ keep Diesel fuel RPM below 2000: SWITCH to higher gears ASAP (check)
2/ maintain constant speed as much as possible, no or few acc/deceleration (not there yet...)
3/ anticipate what traffic will do (check)
4/ easy on the gas throttle, easy on the brakes (check)
5/ brake on the engine, with clutch engaged (check)
6/ do not drive fast (faster than 100km/h is tooo fast) (not there yet)
7/ maintain optimal tire pressure (???)
8/ do not over-use defrost/airco. Do not open windows as it augments wind-braking (check)
9/ keep weight of stowage below optimal levels: do not overcharge vehicule (check)
10/ to measure is to know is to reduce: keep log of fuel consumption at gas station (check)
