Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
47-8
DAVCO FUEL PRO 382 AND DIESEL PRO 232/233 FUEL/WATER SEPARATOR TESTING. AIR OR GAS BUBBLES, WHICH MAY BE VISIBLE IN THE CLEAR FILTER COVER INDICATE HARMFUL LEAKS, AND CAN CAUSE IMPAIRED ENGINE PERFORMANCE. MODEL YEARS UNKNOWN. *PE
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.