How?

[weewee]

How do you fill the shocks to make them stiffer. Just take that cap off and fill it with shock oil and put the cap on?? Thanks

[Subaru]

move the body up and down to get the air bubells out

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you can't say can't

[weewee]

then what?

[modro]

remove shock, remove spring. take off cap and dump old oil. add new oil, fill almost to top. slowly pump shock shaft up, then down to get air bubbles out. allow bubbles to rise. top off shock. slowly screw cap back on to allow extra oil to come out (if you are messy like me) pump shock shaft, if it is smooth feeling you did it right, if it feels weird and makes squeaking noises, remove cap and get the rest of the air bubbles out.

i believe stock the rustler has 30 weight shock oil in it. go a little heavier if you wish to jump, about 35 or 40. make sure you use SILICONE SHOCK OIL from the lhs, not motor oil or anything like that (i knew someone who used two stroke oil in their shocks...don't do that

[Les]

Wee
Heaver Weight Shock oil.
Also when you got your truck you should have gotten a bag with Spring Spacers and Shock Pistons. The pistons are small round and have differant sized and number of holes in them. The Pistons control Damping and Rebound speeds. The size and number of holes in the pistons control how fast the oil can travel from the top of the shock body to the bottom. So using smaller shock pistons or heaver oil will make the shocks stiffer. BUT this is only part of the story. Shock springs can be changed to stiffer ones. Then the shock spacers. Differant thickness are then used to fine tune.
Subaru stated that you move the body up and down to remove air bubbles.
I have 4 cloths pin that has one side glued to a board so that the other can move. I will clip the shock body into the the cloths pin to hold it up right.
Pull the shock shaft down to the bottom of the body. Fill the shock with oil and let sit for a few seconds. Slowy push the shock shaft up to just below the top. Then back down. Repeat this while keeping the shock filled with oil until no more air bubbles appear in the oil. The next step is just something that I do and does not really need to be done. But I will let the shocks sit overnight with the shafts at the bottom. covered with the caps just sitting on the bodies to keep dust out. The next day I will check to make sure that no air bubbles are present then finish putting the shocks together.
Les

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excuse me while I pass some gas