Did a search but came up with nothing, maybe the way I wrote it. Got some old diesel fuel in my MH. Last time we used it was 2015. Some time after that I put about 20 gals in it and now it has about ...
Get in the habit of using fuel stabilizer, especially near the end of the season. Algae can be a problem along with condensation. Use some fuel additives to take out the water. I like the stuff in the white bottle available at any truck stop.
Carrying a fuel filter is absolutely the right thing to do with any diesel.