Yes on what has been posted, but.
The slime gets in the shock and degrades the weight of the oil.
We run Losi shocks and use Green Slime to lube the O-rings prior to assembly. But, we keep the amount of slime to the minimum. I've seen people assemble Losi cartridges and use the tube of slime like a caulk gun to squirt a bunch of slime in. Instead, we put some slime on a finger and roll the O-rings in it, removing the excess before putting the ring in the cartridge.
We then put a small amount of slime on the shaft around the E-clip lands and the end. Thus the O-ring and shaft are lubed for the installation of the shaft into the cartridge and all the lube is present that's ever going to be used between the ring and the shaft. But there isn't a great humping gob of slime to contaminate the oil.
At big races we re-build shocks every day, sometimes more often, so O-ring degratation from friction with the shaft usually isn't an issue.
Engineering Without Fear