Mercedes-Benz is now recommending that all FSS-equipped vehicles leave the oil drainplug off and install their Mannheim total-loss oiling system, which apparently is a gravity-feed cannister mounted in place of of the oil filler cap. This revolutionary system ensures a fresh supply of engine lubricants while eliminating sludge build-up as you drive. I understand their experience with diesel automobiles led them to believe this system would be socially acceptable to other motorists.

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Dean Albrecht
"Lead, follow, or better yet, get out of the way!"E500 owners motto