I hope you're kidding too. If not you can add vegemite to Dexron and run it in your TJ automatic transmission if you want to but I sure wouldn't.Good catch! He was wrong that it can be "ordinary" DEXRON. Can't be DEXRON I or III. It works by changing the dexterity of the oil by adding 1 ingredient to DEXRON-III which turns it into ATF+4.