Q: I just purchased a 1978 Citabria 7ECA with a Lycoming O-235-C1. Just had my first oil change done — it has no oil filter! Just one, maybe two, screens. Are these screens just as effective if I change my oil every 25 hours? Should I add an oil filter? Is that even possible? I run Phillips X/C and CamGuard. Your thoughts?
Jimmy Schramm, Tampa, Fla.