I recently installed the oil seperator on my RV7 which always had a little more blow by than my other plane probably due to higher compression ratio. I was constantly cleaning the belly and got tired of doing so. It is an awesome product and after 5 hrs of flight the belly looks perfectly clean. It was an easy install and I am sure will also cut down oil consumption. Money well spent and with their install kit iy was easy to drill out the hole in the exhaust also