Might be I am asking what is already asked gazillion times, but correct me if what.
I am newcomer to VW sociality, this is my VW Jetta MK2 and also the very first car.
My question. I am wondering can I somehow adjust diesel fuel consuption to lower it even more? For ex. if I am going for long road trips. How much is it real? What are side effects?
P.S. If there is also some kind of related link to such question, please be kind and share it. Thanks!