liquid x fluid

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The LCN closer fluid "Liquid X" will perform without variation between:  -30° F to +120° F - for manual closers.  +35° F to +120° F - for electrical closers and automatic operators. At around ...
closer fluid, fluid, all weather fluid
The fluid in an LCN closer must not be refilled in the field. See attached Warranty and Repair Communication 
Oil, Closer Fluid, Fluid