[1968chevelle]

What they tell me is that it grows a fungus which causes the filter to build up a gel, a buddy of mine is a full time mechanic, he gets 2-3 a mounth, his thoughts are any sort of aditive helps, just the cheap stuff from wal-mart he saies does the job, he thinks it is mostly in trucks that dont get run a lot, mine as a rule gets 100+ miles a day I havnt had a problum myself.