PSA: EFR Turbo Oil Drain Information. Read this before designing your oil drain
#41
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Marvin, everything you said is true but I mean just above MFSPSTurbo explained how they stay away from pipe and AN fittings with all the restrictions for oil drains. Up to date information straight from the horse's mouth, if you will. It seems like you kind of repeated the original argument after this update which was made for a reason was explained. Probably any way can work. There are lots of variables since a turbocharger can be put on any engine in any configuration. OEMs use 2 bolt flanges on turbo drains a lot and you can get nice gaskets an OEM one might even fit.