Installing bung plugs in fuel tanks... any thoughts or insight?

[tvinny]

My neighbor and I pulled the fuel tanks on his L6060 about 14 months ago because his tractor was stalling. We found rust from the untreated metal pickup assembly. There was rust debris and other trash in the tanks. We replaced the pickup assembly and filter after cleaning and reinstalling the tanks.
Fast forward to today... Tractor started stalling again. After being asked for help, I discovered some debris and a little slime in his water separator. We blew the lines out, recharged the separator, purged the air. Tractor ran fine for 35 minutes sitting still. A few minutes after putting the tractor in motion, it stalled. Not surprised.
To my neighbors credit, he changed some habits by buying new containers, a screened funnel, and replaced the fuel filter.
I suspect that scum to be the biggest culprit as the tractor is not stored undercover. I talked to him about treating his fuel.
Now the question. Have anyone reading this ever installed bung plugs in your fuel tanks for easy drainage and cleaning so as not to remove them? If so, how has it worked out? Parts used?
We are also going to install a screen type filter on the new (14 month old) fuel pickup to aid in keeping crap out of the fuel lines. Anyone ever done this before... experiences and parts used?
What fuel treatment works best to kill the scum?
I've owned two Kubota's over the last ten years and have very little problems with them. He is part-time helper in maintaining his son's farm. We're not long time professional tractor folks, just seeking some wisdom... please be Kind in your comments!

 

[GeoHorn]

You cannot resolve the problem by “killing the scum”. (Once the biologicals are in the system their spores remain and can re-grow unless cleaned out. They live in any water condensate in the system and “eat” the fuel for food. Their body-wastes are what is called “scum” or “algae”….but that’s not actually what it is…. it’s a mass of wastes.) The entire fuel system must be cleaned.

Then “scum” (biologicals) can be Prevented ……by the use of a biocide. I recommend Biobor JF as it is approved for a wide array of fuel systems including aviation, so that should be fairly convincing as for effectiveness and safety.

 

[tvinny]

You cannot resolve the problem by “killing the scum”. (Once the biologicals are in the system their spores remain and can re-grow unless cleaned out. They live in any water condensate in the system and “eat” the fuel for food. Their body-wastes are what is called “scum” or “algae”….but that’s not actually what it is…. it’s a mass of wastes.) The entire fuel system must be cleaned.

Then “scum” (biologicals) can be Prevented ……by the use of a biocide. I recommend Biobor JF as it is approved for a wide array of fuel systems including aviation, so that should be fairly convincing as for effectiveness and safety.

Thank you very much for that information. After going thru the process the second time... he will be convinced the fuel treatments will be worth it.