87 ranger 373 V 175 hp merc


I got this boat a few year back and one repair I preformed right away was changing out the old frozen steering cables. The install went well and the cables made the boat steering extremely smooth.

now a few years later they are getting real stiff again.

Is there a tool or somthing that I can use to lubricate the cables?
Is this typical of cables? I am starting to think so because I helped a friend change steering cables in his boat shortly after I did my own and he is complaining as well.

My boat gets used severl times a month at the least so its not from lack of use.

Thanks in advance for some insight here.

Jim