yep
I tear the car down, leaving the bulkheads and a arms on it without shocks, and remove axels and bearings and diffs, then soap it up with dishwashing soap in the sink with a toothbrush. Air compressor dry it, and give it a one over with wd40 on a toothbrush, don't soak it....tear the diffs down and use a toothbrush with dish soap on it with hot water to clean it, then wheel bearing grease on the gears and outdrives, 5-7-3 is a good baseline for the diffs.... If you only have 1/2 gallon on the bearings then wipe them off and leave them alone. If your taking the whole car apart put new bearings in it, avids are inexpensive...they sell the rubber sealed ones that would work great if you race in sand.... But check the old bearings first and if they are fine then there you go....