Is it always absolutely necessary to drain the Flow Control Valve (FCV) for every oil change? If so how much oil is up there? This link makes it sounds like there's very little oil up there.
I only have 200 miles on my oil, but I'm getting ready to hit the Tail of the Dragon. I want to change the oil/filter before I go.
If it's ok to ignore the FCV, should I put a tiny bit less oil in or should I do the full job?