Greg,

I buy the same stuff from my local lawn mower/ bicycle shop.  I changed
my first set of it after about 3 years (not counting build time in the
box).  I was thinking of adding a note to my Aircraft log about the
scheduled change interval.  I guess 3-4 years seems reasonable.

My quandery is the brake line life.  Numerous folks have the stainless
braid on the last couple feet.  My nyla flow tubes now have close to 5
years on them.  Not sure how brittle they are becoming.  I had Vern
throw some in my last order.  I hope to get real motivated during my
annual and just change them all out.  (Sounds messy).

Larry