Hello Guys, my problem is that my oil fields are getting lower. But only those which I am using. For example: By the start of the game I had some with 3000% precent and now with 50 hours in this factory the precent decreased to 1000%. Is there anybody who knows why this happens ? I have some mods in...

Hello,

I am pretty new to factorio.
I wondered if somebody knows where to find the ratios for the production chains, so I know how much I need to produce of each item.
I can’t find this anywhere.
Thanks in advance.

Bye