if you want bullit-proof cooling of your oil,try a fluidyne heat-exchanger...mazda motorsport was selling these...you run your coolant through this unit..therefore your oil temp will remain the same as your coolant temp (within 5 or so degree's).,i have been using these for years on a 83'12a first gen rx-7 which was a ITA car,then switched to EP..,currently running it in vintage races...we have had no problems what-so ever since going this route...i have a brand new one in stock and will sell it to you for $300.00,i payed $394.00 in 1997..it was for a second gen project which i never started...it mounts right behind radiator..on my car..thanks Bill