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EPRI published some work on greases for GE Magne-blast circuit breakers in their Lube Notes Number 7 in 2004. Available online at www.epri.com. Tested Mobilgrease 28, Polyrex EM, Polyrex Ep2, Mobilith AW, MOV Long Life and MOV Long Life Syn. EM did the best re oil bleed, EM and Syn better for TGA and the two MOV greases better for evaporation and much better for corrosion protection. 

RM

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