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Has anyone out there in the northern states had problems with the expansion

characteristics of 5606 hydraulic fluid ? It seems that my up pressure

switch sticks increasingly worse with the decrease in the temperature. Is

there some nice military substitute for 5606 for those guys in Alaska ?  I

would hate to just adjust my up pressure switch artificially high to make

things work for the winter. It might not be so good when I fly to Sun & Fun

and transition to80 - 90 degrees !  The pressure switch is the first

generation 1988 ish adjustable.





Thanks



Lloyd