Endura 4, with oil pen filled with food-grade mineral oil, to keep the K390 looking new. The pen lets me deposit the tiniest drop on the blade, or five if that is what I want, and seems leak-proof. Called a "Precision Oiler" at Amazon, about $8.50. My GF gave me the pen and for a while I wasn't sure why I needed it.
"Life's been good to me so far" - Joe Walsh.
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