. It was an interview with a oil chemist who was
>discussing additives and corrosion in engines. When asked what he would
>use for an infrequently driven vehicle (presumably like a lot of
>Vanagons or Westfailias used only in summer months) he answered diesel
>engine lubricant. These oils have much more anti corrosive additives and
>detergent than gasoline oils so therefore protect better against
>corrosion which he claimed was the problem.

        Shell Rotella 15w/40 with "Soot control"  is preferred by our household.

hk