sunghyun7

I'm trying to drain as much oil as i can. i have quesion about this drain plug. looks like oil channel connected to the sump pump or coolant passage. does anyone know? if this is the oil channel, can i unplug this?

wageslave

Obviously this is all up to your personal level of risk, but I wouldn’t try to drain “extra” oil beyond the ~4 liters indicated. There are two strategies to mitigate the unclean feeling of never being able to get the used oil out: change twice as often as you would have or do two (or three) changes back to back (cup car advice supposedly).

neanicu

That's a coolant drain plug.

Diablo Dude

That's where your ADM comes out.
I wouldn't loosen it.

V999

I thought it would be bigger.

subshooter

Fortunately I've never heard those words. But then again, I never paid an ADM either. lol

sunghyun7

hey guys i got over 6 liters of oil out with just 2 factory drains. nothing special. i just let it drain for 2 days. it was still dripping. i bet we can get 7 liters if you leave it draining from all 3 spots including filter for a couple more days. I don't think the dealer used gt oil on my car. it was normal brown color oil that drained out. i put the green stuff in. sounds smoother. altho that could be in my head.

3-Pedals

All oil turns brown with time unless you drain it too soon.

neanicu

Leaving a car to drain oil for 3 days is an unrealistic scenario,unless you're doing it for yourself. I am surprised that it's been so long since this car has been out and nobody was brave enough to remove aditional drain plugs(I understand there are a couple..?) and see whether more oil would be removed that way.
The green color of the oil is given by dye in the oil : but there's nothing special about that oil just because it's green. Perhaps Mobil 1 made it green just to make it feel special,just like Royal Purple has been doing for years.
Of course with use,the green oil will turn brown.

sunghyun7

I would've removed them except someone raised some point about potential priming issue with draining from unspecified location. and I would be taking a chance I can find the same crush washer in a reasonable time frame.

my friend's gt oil dye was readily visible at an oil change. that's his daily driver. My last oil change was at a dealer a few months and about 500 miles ago. I just like driving on my own oil.

I get there is nothing special about the dye. it just denotes the newer formulation. i'm sure it's 99% marketing between mobil1 and porsche, but I don't like second guessing factory recommendations. i usually use amsoil or pennzoil ultra platinum which I'm sure would work perfectly fine as well.