Did you ave a moisture trap? Clean what you can get out, then I think I'd try putting some fresh oil in the reclaimer and run the pump, maybe even a little water in the oil, like 10% water. You might need to change the oil 2-3 times. In the future get and use a good moisture trap. Some even use 2 water traps in series.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.