Reading old posts on DFA's and Molakule's post on ATF ingredients reminded me of a long-ago 3 month experiment. I asked an OLD diesel mech what he intended to do about the then upcoming lowering of sulphur and was told "the easy solution is 1-3oz of Dextron ATF per tank" to keep the pump lubed. I did this for about 3mo, had no ill effects but couldn't document any positive results, so I went on to another OTC DFA. All comments welcomed! Tom