Installed 4 Dehydrator Plugs (18mm). Needed trip to hardware store to get a long reach 7/8" socket for the aviation spark plugs. Terry Moushon (RV-10 builder and Tech Counselor) confirmed only four would be needed (one per cylinder). I'd need 14mm automotive size for the other 4 locations (due to E Mag installation).
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| dehydrator plugs prevent rust and corrosion in engines while in storage. Contain silica gel which turns from blue to pink when moisture is absorbed. Reusable and refillable. The pink silica gel may be reactivated (after removing from reservoir) by heating |