I added a Laminova oil/water exchanger.  It is connected to the coolant return line and in series with the oil/air exchanger.  I measured a 10* increase in coolant temp through the exchanger.  I haven't measured the oil temp drop yet.  However I estimate the oil temp drop through the exchanger to be 20-25*.  

 Mark    

All sounds good.  I also have a Laminova H.E (C43-330)., and after down-loading the performance charts, and looking at the flow/pressure drop data; I chose to plumb it in parallel. It is designed for typical piston engine oil flows, and will give some pressure drop in our rotary use. Measuring your oil pressure at the return to the engine, don’t be surprised if you see a lower number than before.

At 6000 rpm (about 15 gpm oil flow) they show 10-12 psi drop with oil at 250F. Don’t know what it is with oil at 150F.

Al