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These little engines run at a high rpm with the compression created by a seal between the piston itself and cylinder wall. Any amount of dust breathed in will cause permanent damage to the engine and shorten it's life. I wouldn't run one with a dry filter. You can risk it and use some other...

Odds are, bicycle chain lube isn't a good choice. For RC filters, you want sticky air filter oil. I've used motorcycle oil for years on mine, PJ1: https://www.rockymountainatvmc.com/parts/pj1-foam-air-filter-oil-p I soak the filter with wd-40, work it through to clean it. Then use dish...