Difference in levelers

I had two separate hydraulic lines (for my POWERGEAR jacks fail. One was due to chafing...and the other had a hole in it. (13 years old). Both times the other 3 jacks still worked. All 4 jacks deployed...but the one with the damaged line retracted within a hour or so. Still...all went well. A small puddle of oil dripped where the damage was.
I went to the same hydraulic shop both times and both times I had a new hose within 10 minits. I THINK....$7/foot. Didn't really matter tho...you needed a hose with fittings, they made it...pay for it. (one was 7 feet,the other 30 feet)