Recently I noticed that two of my rocker plugs are missing allowing road water to be sprayed up into the rocker. My rockers are currently rust free and I would like to keep them that way. I would like to clean, dry and re-rust proof in there before I replace the plugs. I am told that they came from the factory with a waxy rust coating sprayed in. Any body have any suggestions for cleaning in there and re-applying the rust proofing?

Thanks.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine