Bryan, I'd utilize a one way valve on the cooler side of your T. I believe Earl's or Russell makes the one that I used. I'm not 100%, but I think my system was plumbed to filter the oil after it circulated through the t stat, cooler, accumulator. Is it the best way for cooler, tstat, accumulator longevity, probably not. If it saves connections and hoses, maybe it's a good trade off? Lastly, Moroso makes aluminum accumulators to avoid any powder coating needed.
Here's the check valve:
http://www.summitracing.com/parts/ea...0erl/overview/
The one I used was aluminum colored. Just make sure it's compatible with oils.
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
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