[DarkPira7e]

Since I couldn't find any experience threads detailing this, I figured I would add something if someone is searching.
In my use case, I pieced together a turbo setup and ran an external oil pump as an oil drain because I didn't like gravity drain on an oil cooled only turbo.
TL;DR - Worked very well in temperatures from 102F in traffic down to -17f interstate driving.

Usage - Daily driven, 7k miles
Model - TurboWerx Spartan Base Model high temp oil pump
Provisions - Changed plastic barbs to aluminum for -AN fittings

I ran it with a relay connected directly to the battery with a fused link. Since I mounted my oil pump on the crash beam, I was able to run power and ground behind the headlight and under the fuse box for max stealth. I chose to sleeve the wiring to protect from water/snow/salt since I daily drive my car.

Fuse used - Windshield washer spray

Pros -
No worries about oil backing up into turbo from slow drain
Extra oil cooling from being routed externally
Extra oil capacity for cooling

Cons -
Complicates setup with another point of failure. If oil pump fails, there is no possible way for it to drain naturally into the pan.
Loud (unless you don't mind race car stuff)

Overall impression -

I really enjoyed not having to worry about the oil draining. If I had been running a turbo that used water and oil cooling though, this would be near useless. (I switched to a dual ball bearing Garrett turbo and sold the pump)
People who ride passenger immediately ask about the noise, it is apparent inside and out. Can be jarring if you want a quiet cabin. I was thankful that it was loud, I would listen for it before starting the car to be sure it was running.

This allowed me to run my oil return line away from the header, which was a huge bonus.