We used to carry the same oil cooler hose a few years back, but experienced too many failures, just like the ZIP hose. My analysis is defective hose and/or crimp. Oil gets under the outer rubber sheath, builds up a bubble that ruptures.
That's why we discontinued & switched to making our own using Edelbrock/Russell hose & fittings along with a single piece CNC billet adapter of our design.
I think the oil cooler hose from ZIP, and all the other Corvette parts suppliers, all have the same origin.
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Jerry Downey
JERRYS LT5 GASKETS & PARTS
http://www.jerrysgaskets.com
1994
ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc.
2016 Black-Red, 3LT-Z51 Auto 8-speed.