Fluid systems - damage models?

[Whacker]

My friends, crabby ol' Uncle Whacker is in need of some education.

As of 4.11hotfix, I'm trying to ascertain exactly what's modeled in terms of damage to systems that contain fluids. This includes fuel, oil, coolant, and hydraulics. What I understand is covered are the following:

1. Damage to fuel tanks is modeled. When damaged, the tanks will leak fuel in the form of a light white stream behind the aircraft from whichever fuel tank was hit. The plane will leak and stream fuel like this until the affected tank(s) is/are empty. Questions: if the message "fuel tank damaged" shows up, does this mean the tank is damaged and self-sealing (if applicable) failed? Does it mean the fuel tank was damaged and self-sealing worked? Does it just mean fuel tank damage irrespective of self-sealing?

2. Damage to the oil/lubrication system is modeled. If hit or damaged, the windscreen will show the "oil splash" graphic. The aircraft will trail a darker black smoke. Questions: Does the aircraft trail smoke only until the oil runs out? Until the engine quits? Forever? Is the amount of smoke generated variable, and does it depend on the amount of damage?

3. Damage to the coolant systems is NOT modeled. Question: Any plans to include this in future patches?

4. Damage to the hydraulics systems is modeled. Questions: Does this create any "streaming fluids" like the fuel system? I don't recall it ever doing so. If yes, what does it look like?

Please see my questions, and correct any wrong information.