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As many eagerly await fellow NAM members' durability results with Prima Epic, I thought I would chime in and give you some durability expectations based on our own thorough testing.
To tell or not to tell?
At first I had decided to let the members discover and report their durability findings and not say a word. It's more fun to imagine the surprised look on your faces than to spoil it and ruin the surprise! I still want (and you still want!) member reviews to drive the final conclusions, but I'm finding that it may be a hinderance overall to not know what to expect. So, should you find different results, so be it. But at least you can all rest a little easier knowing what has been found over the past year or so regarding the durability of Epic.
A little about our testing...
We do our own durability testing on several different vehicles, each under varying environmental exposure, and using various pre-wax preps, all to allow for variations in customer processes and situations. Also, we have a panel of "testers" from all over the US (as well as the UK and Australia) to test for personal application variations, environmental differences and to simply attempt to remove any biases of our own.
On all of our "daily driver" tests during the past year and a half, we have consistantly seen 5-6 months of durability. At the 5-6 month point, the protective effects of Epic usually start to fade. The "daily driver" test cars sit outside all day long. Some are covered at night and some are not. There were no differences in durability between winter and summer tests.
Prep It should be noted that in all test cases, the paint was prepped. Although the preps (chemicals and processes) varied, not one documented test had zero prep. This is because any synthetic will have a hard time bonding with unprepped paint and can severely affect durability. We decided it would really be silly to test for durability of a synthetic on an unprepped car.
Lab Testing
In addition, our chemists have a controlled wax testing system based on # of washes. Epic withstood an average of 25 washes before it began to fade. Keep in mind that these were back to back washes in a lab, sans environmental aspects, etc. The wash they use for testing is a generic car soap that I actually find it a bit harsher then the typical "enthusiast" car soap.
So, I hope this helps! Everyone seems to be wondering, so I hope I've demystified Epic's durability a bit. Sorry to ruin the surprise!
Of course, we all know that ultimately your own results will be the final WORD.
Thanks for all your reviews and for giving Epic a try!
I'm working on a formal review on a daily driver as well... it's only been a few weeks, but the Epic's still going strong. Very smooth... very slick. Using Prima's detailing spray for between-wash touch-ups. So far, I'm quite impressed. Let's see what the rains that will be here soon do to it.
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~Matt Cook | Dublin, Ohio | '92 Classic Mini Sprite: "Fiona" + Purple Haze 2005 MCS Cabrio: "Dawn". See old MODs from "Nano" HERE - post #166 - many with How-to links!
I still want (and you still want!) member reviews to drive the final conclusions, but I'm finding that it may be a hinderance overall to not know what to expect. So, should you find different results, so be it. But at least you can all rest a little easier knowing what has been found over the past year or so regarding the durability of Epic. 
