clogging pre filter 300sd

Can any one give me some insight to the problem I have been having. I have a 300sd 83' Fantastic solid car. This summer I drove on WVO. I did not have any other filtering sytem on the car and the WVO was filtered down to 5 microns.
The car ran exceptionally well for the duration of time I was running the WVO. I have since stopped running on WVO and have switched back to Diesel. My problem is that I think the WVO loosened up some serious diesel sludge in the tank since as of late I am having to almost daily swap out the completely clogged Pre-filter. Can anyone tell me if this sludge will eventually be cleaned out and how long it will take. Or am I looking at a complete purge of my tank system. Any in sight will be helpful, thanks Brian

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