Last fall I installed a TOCA (thermostatic oil cooler adapter) on my Jabiru 3300. This allows for faster warm-ups during cold weather and eliminates the need to partially block the oil cooler during the winter. Steve Rance, the inventor and vendor of this TOCA, said I needed to upgrade my AN6 stainless braided/teflon lined oil cooler lines (which I had fabricated from the Jabiru USA firewall-forward kit materials) to AN8 lines and fittings to get the best oil circulation and pressure. One of the lines I had built had a slight seepage that always annoyed me, so I decided to spring for professionally-built custom lines with pressure tested, crimped fittings.

Steven Tschurwald is a Zenth.aero member and a principal in Aircraft Specialty, custom fabricators of many items used in experimental aircraft. I ordered a set of lines from him and promptly received them. Unfortunately, one of the line's fitting leaked when installed! I was not sure if it was a defective fitting or if I had damaged it somehow during installation. I called Steve that afternoon and he said it made no difference whether I had damaged it or not, the line was 100% guaranteed. He said he would fabricate a new line immediately and ship it overnight to me at no additional charge! I told him overnight shipping was unnecessary as I was going out of town for a couple of days and to just ship it 2-day express mail and that would be fine! He requested I return the defective line (at his expense) for failure analysis - so he included a pre-paid return label with the replacement hose.

Later that same evening, Steve sent me an email with a video file showing a short movie of my new hose being pressure-tested! It was in the mail the next day. When I returned from my trip I installed the new hose and it fit perfectly and there were no leaks!

Here's a pic of the new hoses:

Just thought this might be of general interest to the Zenith.aero community .... I like to recognize vendors that deliver quality products with superior customer service!

John

N750A

(the usual disclaimer - I have no business interest or financial affiliation with Aircraft Specialty - just a happy customer!)