It is important to check the oil sump screen for contaminants at least once per year. This was the first time this screen was checked, one year after a major overhaul. The connecting rods were scraping the crankshaft due to misaligned/wrong parts.
![[Credit: Wikimedia Commons]](https://www.kitplanes.com/wp-content/uploads/2026/07/4_rutan_a_longez.jpg_preview.jpg?w=218&h=150&crop=1 "Rutan Symposium Turns to the Coming Canard Maintenance Crisis")
![[Credit: Lisa Turner]](https://www.kitplanes.com/wp-content/uploads/2026/02/Fuel-Selector.jpg?w=218&h=150&crop=1 "Fuel Follies")
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Archive: April 2012
Formation flying was the subject of our April 2012 cover. RV builder Dave Klages...
Check the oil sump EVERY oil change just as one inspects the filter media.Unpleasant surprises don’t always show up in the oil filter.
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