Rohloff Speedhub 14 Service/Oil Change Question & Advice?

[nogoodnamesleft]

Speedhub purchased new and previous service done by LBS. But looking at what's involved looks fairly straightforward (I'm no bike mechanic but moderately capable with such stuff) so hoping to DIY it.
Looks like a "service" is just an oil change". Plenty of online guidance but I've 3 questions:

1. The quantity of new oil to put in. Manual shop gave me when purchased says 12.5 ml BUT online (SJS publishing Rohloff's instruction sheet) says 25 ml oil back in. What quantity do people use. Or put back what I take out (allowing for cleaning fluid, etc.) to min 12.5 ml. 1st time I'm doing it so don't know?

2. From what I can see the drain screw appears not to "stop" or tighten and mustn't be screwed in too far. It there no "tighten" and just screw it in until flush rather than until ant "stop"?

3. Anything else I should be aware of or take special care of?

Many thanks

 

[wakemalcolm]

I remember reading somewhere that the advice has changed from 25ml to 12.5ml. I think the hub is robust enough to cope with anything in between. Mine 'farted' out some oil at the top of the Gavia but it's functioned ok for the 19 years since.

Regarding the drain screw, I just turn it until it's tight without forcing. The replacement screw comes with a thread lock type coating so is unlikely to pop out.

Anything else? Be careful with catching the old oil when you take it out: it's pretty manky.

There's a Rohloff group on Facebook if you want more bees in your hive mind.

 

[JonBuoy]

This should provide the answer to your item 1: https://www.rohloff.de/en/company/news/news/reduzierte-oelmenge-fuer-oelwechsel-ab-10-2023

 

[Mike Ayling]

Replacement Drain screw has something on the thread to make an oll tight seal which also makes it quite hard to screw it in so it does not go past level with the surface of the hub.
They are fiddly little things and easy to drop onto the floor and hard to find after you have done so!

 

[nogoodnamesleft]

They are fiddly little things and easy to drop onto the floor and hard to find after you have done so!

When I ordered the oil change kit (the Rohloff one) the retailer also had additional drain screws for a couple of £ so ordered as well.3000 miles is not a vast distance when on several months touring and whilst I'd expect the Rohloff to continue after that without issues, given it's cost, etc. I can see myself having to do an oil change at some campsite, on grass ...

 

[nogoodnamesleft]

Many thanks for tips and advice. Much appreciated and expect no issues. Drain screw was a concern given my tendency to over tighten things "just to make absolutely sure they don't fall out ...".