LOSA99208 Losi Shock O-Ring Grease, 8cc. This is a high grade synthetic grease that has special additives to lubricate silicone o-rings without making them swell and cause drag on the shock shaft. The unique formula is not effected by silicone liquid so it stays on, in between, and around the shock o-rings preventing wear and unwanted friction.
 This is also very good when used between two moving surfaces such as servo savers and the like. The handy tool box sized tube holds a generous 8cc of grease and a screw on cap to prevent accidental spills.