truggy center diff oil weight
 

just got my xt8 up and running . went with 10000, 10000, 5000 for diff oil.

on 5s with a 7xl the front tires balloon up so much it looks silly.

so question is this? what is the compromise between thick fluid to prevent the ft tires from coming unglued and the "proper" oil for racing?

im thinking about 10 20 5

with a BL system tour tires turning into pieplates is what happens and I dont think playing with the lube in the diffs will help( I might be wrong though), in on road applications I use solid foam tires to keep the tires from ballooning. I have thought about coating the tires with some sort of coating that will turn hard (maybe like a white glue) and this would help keep the tires rigid and not allow the expansion

I always put 30k in the middle and it works pretty good...

Yep...I've got 30k in my center diff in my BL CRT and it works very well.

30K or 50K work great for me in my E-CRT.

I use 7k in the front, 10K in the center and 1k in the rear on my truggy. It definately unloads to the front a bit, but also provides stable driving and unloads to the rear on braking. On a rough track, lighter oil is usually in order(our track is bumpy). On a high traction, smooth track, heavier oil will improve acceleration. Anything above 20k or so is too stiff for my liking in the center on a truggy. On a buggy, I don't like anything over about 7k in the center. To each their own, though.

Mike's hitting it on the head here - it depends on your track. Our local track is kind of in between . . . not really rough, but not smooth either. In my XT8 I run 7k front, 25k center, and 3k in the rear. Seems to work well for me so far. Hope all this helps.

I would also say it depends on if you are using motor brakes. If you have a brake servo, you can run lighter weights. In my Muggy (bit heavier than a truggy), anything less than 30k and my brakes suffer (no stop so good).