As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN DESCENT ENGINE ANTI-ICE WAS TURNED ON AND CREW NOTICED SOME HAZE. TURNED OFF ENGINE ANTI-ICE AND HAZE DISSIPATED. ACCOMPLISHED NUMEROUS PRECAUTIONARY CHECKS AND NO PROBLEM FOUND. CHANGED THE WATER SEPARATORS AND ACCOMPLISHED A PACK BURN OUT.