Again, I dont have much experience with this specifically, but the air leaking by would be negligible. This type of thing occurs when attempting to outgas a satellite, tapped blind holes are a big no no because they trap a miniscule amount of air at the bottom when a screw is inserted. It can take days for all of the trapped gas to escape when placed in a vaccum. (approx 14.7 PSI pressure differential)
Yes, air leaks are bad, but you are probably talking about mls of air over days at pressure. I would imagine most of the oil is leaking out when the temperature is cycling and the (aluminum) intercooler is expanding and contracting. Putting RTV in there helps keep the seal intact at all times.
Yes, air leaks are bad, but you are probably talking about mls of air over days at pressure. I would imagine most of the oil is leaking out when the temperature is cycling and the (aluminum) intercooler is expanding and contracting. Putting RTV in there helps keep the seal intact at all times.