Identifying ports on my fuel tank

[elrao]

Trying to understand the difference between replacement oil tank options. I have seen two sorts, largely the same but some have these two additional connections on the front and wondered what they are for:



Am assuming the main oil return is the connection bottom left (and connects internally to the oil filter), is this for some sort of auxiliary loop?

[john walker's workshop]

That's a turbo tank. Regular tanks don't have those two ports.

[mpeastend]

disregard

[elrao]

Thanks. I'd come to that conclusion (based on no fact, just that I couldn't think what else it could be for).

Not sure why I've got a turbo tank, guess it was replaced at some point.

Any info on how those ports are connected inside, does one go to the filter like the main oil return? Can't find any images showing the film oil flow for a turbo

[boyt911sc]

Originally Posted by elrao

Trying to understand the difference between replacement fuel tank options. I have seen two sorts, largely the same but some have these two additional connections on the front and wondered what they are for:



Am assuming the main oil return is the connection bottom left (and connects internally to the oil filter), is this for some sort of auxiliary loop?

That is your oil tank. Not a fuel tank.

Tony

[elrao]

Originally Posted by boyt911sc

That is your oil tank. Not a fuel tank.

Tony

Thanks for pointing out the typo, had it correct in the title atleast!

[elrao]

This is the only parts diagram I have found that shows a connection to the front. Is from a sportomatic, implies this is the oil system for that (not a Turbo)