Question for 914/6 oil tank/oil change, Does it need a supplemental way to drain? Options

[Krieger]

I have seen some of the members here adding ways to drain the oil tank. 911s have a tank drain, but their tanks are mounted fairly low in relation to the engine. The bottom of the 6 tank is close to being near the same height as the top of the engine caes. Won't the oil just run into the engine case?

[Krieger]

Thanks for this very helpful info One of the memers here posted this pic. I am doing a front cooler with AN lines and may do this to drain my oil.

[ArtechnikA]

Thanks for this very helpful info One of the memers here posted this pic. I am doing a front cooler with AN lines and may do this to drain my oil.

Traditionally the front cooler is in the scavenge circuit, while the tank drain line is in the pressure circuit (tank -> pressure pump).

Having a drain at the front for the cooler and the lines is sometimes done, but it's no substitute for the standard tank drain line (you'll never drain the tank through the scavenge side...).

Having a capped Tee is definitely convenient, although I doubt it's more so than just using a separable fitting with either two female hose ends and a union ( AN-815?) or a male and female hose end. Once you get into AN-16 (or larger) hose, all the ends and fittings are expensive...

That capped Tee scares me tho, without some kind of positive anti-rotation device. Maybe the cap is drilled for safety wire on the other side where we can't see... (As long as we're being picky, that Tee should be a bulkhead Tee with the bulkhead fitting on the Tee (they also come with the bulkhead on the run) and a proper bracket...)