I just started running a Hyper 8. The front seems to push a lot. Can some one tell me what oil / grease the diffs come with stock. I have just ordered 3000, 5000 and 7000 weight oil. I know I need to some testing on my own, but am just looking for a good staring spot. Thanks

I run 3k-3k-1k front to back. Works great for me on hard packed red clay surface.

I run 3k 5k 5k works ok on my bumpy track.

I run 5K,5K,1K front to rear but might go to 2 K in the rear. From what I have seen most run heaver in the middle and front then they do the rear.

I run 7k, 7k, 3k front to back since the track i use it carpet with wooden jumps.

does the hyper 8 gave the spider diff in the middle? if so them run 3k,3k,5k

Here is a link to Nitro House that has some set up sheets from pro drivers. You will notice all run the lightest oil in the rear why because with lighter in the rear and heaver in the front it helps keep the rear from trying to pass the front
http://www.nitrohouse.com/setup_hyper8.htm
But what ever works for you is what to run.