Will the silicone fluid used inside the damper turn to gel?

No. The silicone fluid used inside Fluidampr and Streetdampr is practically a gel to begin with. In a performance application, the silicone fluid is GUARANTEED against deterioration, for as long as you own Fluidampr or Streetdampr. The silicone fluid is clear in color and is very thick. The silicone fluid is 45,000 times thicker than 30 weight motor oil. In fact, the silicone fluid is not like oil at all. It is sticky to the touch.