fishing line care and maintaining?

[fisherman]

my fishing line seems to be good until a fishing trip that makes the line dirty and brittle... is it because of the friction from the rod guides?? i use a spinning reel with 10lb line and it seems like the line feels dry not smooth and sometimes you can feel a bit of crispy line.... shuld i worry? shuld i get new line? this happens with new line usually from a new spool of line then 1 2 or 3 trips later these issues happens
i use monofilament line

 

[afn1994]

pull it every time and if it holds its ok

 

[Steve-0]

It could be from fishing rocks or cover, or possibly you're missing an eye cover or one of them has a groove in it. If you still can't find the problem then you may want to switch to braided line because it is very abrasion resistant.