Well, like you I was hoping to gain some feedback from reading this thread ? My takeaway ? Just one of MANY garbage arrogant bash threads that was just a waste of my time. I myself was hardcore into nitro back in the early 2000's and I ALWAYS sealed my engines with silicone based RTV . ZERO sealant erosion issues. How can I prove this ? I sold my nephew a Savage MT back in 2007 that had a Collari .30 that I sealed with your basic Autozone black RTV and I just recently bought it back. I wanted to inspect the crank bearing for rust as my Collari engine has sat for a LOT of years. Upon inspection the RTV was in perfect condition, and the crank bearings were pretty gunked up. So a new set of bearings and a RTV seal job and i'm GTG ! I took a long break from nitro RC's , sold off everything back in 2007 and now just recently have decided to revisit the "passion" .