Thread: iGO and car engine type routes? (Diesel)

Hi,
is it possible to tweak somehow iGO to make extra option like in Google maps for Diesel routes?
I know it doesn't make much difference for short trips but when doing 1000+km at one go then this option could save for real.

Basically it's a trick of eco routes + routes not necessarily short but avoiding most traffic lights towns etc.

Edit:

Partially self answering after doing my own research: this is more to do with map scheme like map hnr files: Easy, Economical, Fast, Green etc, so, is there any "Diesel" hnr file for any maps?