Here in Pak. the fuel quality is not very good. And secondly the cost of the fuel filter is only Rs. 150~180.
So I am changing it every after 5K.
For transmission oil, first you have to find its CVT or AT. After that oil will be chosen accordingly.
By the way, life of transmission oil is 50K. Some companies like LM says their transmission oils can last upto 80~100K. But again, 50K is enough time for this job.
Passo?s transmission oil chamber has bolt to drain the oil. After draning, need to open the whole chamber which has 12~16 screws and again almost 200~300ml oil will come out.
Have to fit this chamber back very nicely and then fill it with new oil.
Ask mechanic to open the chamber very carefully and DO NOT damage its original gasket. Because its new original gasket is not available.