A lot depends on what the fuel at the station was "baptized" with

I remember the times when you could put yourself on a mine, especially on further journeys and refueling at unknown stations. I had gas stations in the area and ones that I avoided after gaining experience.
I have driven many tens of thousands of km on LPG, but only once did I have a situation with "baptized" LPG. Until today, I do not know what they added, but when I was returning from Zielona Góra, after refueling, it barely started and drove hard. It is full of hills and I was really afraid that I would not come to one of the next ones. I refueled at every station on the way to dilute this "cuś", even a few liters. With each refueling, the situation improved.