How often should I change my fuel filters?

10 micron filters should be replaced every fifty hours of enine operation.  Keeping this filter clean and fresh will help protect the other fuel filters on the engine and extend their service life.  Always carry a spare on board, just in case you get a load of bad gas and the filter gets overwhelmed.

Primary and in-line filters should be replaced every 100 hours of engine operation.  These are easy to get to and simple to replace.

VST filters should be inspected and/or replaced after every 300 hours of engine operation, provided that the 10-micron external and initial on-engine filters have been serviced and maintained properly.  Properly treated fuel will also extend the life of these filters.