LG-18 performs just like CSG-17 except the “carrier grease” is Lithium Complex. LG-18 extends performance on ferrous metal wear parts 300%+ and usually 500% to 1,000%. The difference is temperature capabilities. Lithium can be used at temperatures down to 60 below zero F (-60 F).
 
Extreme Pressure
-60 F to 390 F
High Speed
Vibration
Impact
FR99 Fortified Lithium Complex
Compatible with all greases except clay based
 
Using air actuated grease guns or small battery powered grease guns, always use LG-18 when temperatures are below 50 F. For any application at sub zero temperatures, only use LG-1