Shock oil

I have a stampede and i'm puttin the big clod tires wheels on it and I plan to be doing alot of jumping with it what wt of shock oil should I use?

When I put Clod tires on my electric Pede, I left the stock shock oil in. It seemed to handle ok. I have some 40wt for it but never put it in. I ended up putting the stock tires on for better accelleration and top end. I'm saving the Clod tires for the snow.

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Some people say the cup is half full.
Some people say the cup is half empty.
I say the cup is twice as big as it needs to be.