Fluid instead of grease?

[jayjay283]

the old revo,(2.5s and 3.3's) tmaxx and 3906 emaxx diffs werent sealed, they were grease packers as I understand it, the 3905 and bl revo (new maxx) Diffs run 30k diff oil.. Which is thick for a diff as they are 4 spider turd piles, grease only lasts a run or 2 then its like bare bones gears with some lube, no resistance splattered everywhere. For cheap get the erevo or 3905 emaxx diffs $15 a pop on ebay, or if wallet allows get Mikes super sick bad ass buggy diffs